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<span class="siteTitle">NYTProf Performance Profile</span>
<span class="siteSubtitle">  <span>« <span class="mode_btn mode_btn_selected">line view</span> »</span><br />
For examples/Atom-timer.pl
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<span class="siteSubtitle">Run on Mon Aug 12 14:45:28 2013<br />Reported on Mon Aug 12 14:46:14 2013</span>
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<div class="body_content"><br />
<table class="file_summary"><tr><td class="h">Filename</td><td align="left"><a href="file:///Users/dde/perl5/perlbrew/perls/5.18.0t/lib/5.18.0/Benchmark.pm">/Users/dde/perl5/perlbrew/perls/5.18.0t/lib/5.18.0/Benchmark.pm</a></td></tr>
<tr><td class="h">Statements</td><td align="left">Executed 112104 statements in 194ms</td></tr></table>
<table id="subs_table" border="1" cellpadding="0" class="tablesorter">
<caption>Subroutines</caption>
<thead>
<tr>
<th>Calls</th>
<th><span title="Number of Places sub is called from">P</span></th>
<th><span title="Number of Files sub is called from">F</span></th>
<th>Exclusive<br />Time</th>
<th>Inclusive<br />Time</th>
<th>Subroutine</th>
</tr>
</thead>
<tbody>
<tr><td class="c0">100000</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.3%">40.3ms</span></td><td class="c0"><span title="0.3%">40.3ms</span></td><td class="sub_name"><span style="display: none;">Benchmark::::__ANON__[:687]</span>Benchmark::<a href="Benchmark-pm-27-line.html#687">__ANON__[:687]</a></td></tr>
<tr><td class="c0">2930</td><td class="c0">3</td><td class="c3">1</td><td class="c0"><span title="0.1%">10.7ms</span></td><td class="c0"><span title="0.1%">12.3ms</span></td><td class="sub_name"><span style="display: none;">Benchmark::::new</span>Benchmark::<a href="Benchmark-pm-27-line.html#536">new</a></td></tr>
<tr><td class="c0">4</td><td class="c1">2</td><td class="c3">1</td><td class="c0"><span title="0.0%">6.01ms</span></td><td class="c0"><span title="44.1%">6.68s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::runloop</span>Benchmark::<a href="Benchmark-pm-27-line.html#628">runloop</a></td></tr>
<tr><td class="c0">2930</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.0%">1.64ms</span></td><td class="c0"><span title="0.0%">1.64ms</span></td><td class="sub_name"><span style="display: none;">Benchmark::::mytime</span>Benchmark::<a href="Benchmark-pm-27-line.html#449">mytime</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.0%">108µs</span></td><td class="c0"><span title="44.1%">6.68s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::cmpthese</span>Benchmark::<a href="Benchmark-pm-27-line.html#890">cmpthese</a></td></tr>
<tr><td class="c3">2</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.0%">52µs</span></td><td class="c0"><span title="44.1%">6.68s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::timeit</span>Benchmark::<a href="Benchmark-pm-27-line.html#675">timeit</a></td></tr>
<tr><td class="c0">6</td><td class="c1">2</td><td class="c3">1</td><td class="c0"><span title="0.0%">45µs</span></td><td class="c3"><span title="0.0%">45µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::timediff</span>Benchmark::<a href="Benchmark-pm-27-line.html#551">timediff</a></td></tr>
<tr><td class="c3">2</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.0%">40µs</span></td><td class="c0"><span title="44.1%">6.68s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::timethis</span>Benchmark::<a href="Benchmark-pm-27-line.html#812">timethis</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c1"><span title="0.0%">26µs</span></td><td class="c0"><span title="44.1%">6.68s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::timethese</span>Benchmark::<a href="Benchmark-pm-27-line.html#852">timethese</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c1"><span title="0.0%">21µs</span></td><td class="c1"><span title="0.0%">79µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::BEGIN@453</span>Benchmark::<a href="Benchmark-pm-27-line.html#453">BEGIN@453</a></td></tr>
<tr><td class="c1">3</td><td class="c3">1</td><td class="c3">1</td><td class="c2"><span title="0.0%">17µs</span></td><td class="c3"><span title="0.0%">17µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::CORE:prtf</span>Benchmark::<a href="Benchmark-pm-27-line.html#Benchmark__CORE_prtf">CORE:prtf</a> (opcode)</td></tr>
<tr><td class="c0">10</td><td class="c0">4</td><td class="c3">1</td><td class="c3"><span title="0.0%">12µs</span></td><td class="c3"><span title="0.0%">12µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::timedebug</span>Benchmark::<a href="Benchmark-pm-27-line.html#617">timedebug</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">10µs</span></td><td class="c3"><span title="0.0%">20µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::BEGIN@3</span>Benchmark::<a href="Benchmark-pm-27-line.html#3">BEGIN@3</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">10µs</span></td><td class="c3"><span title="0.0%">12µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::init</span>Benchmark::<a href="Benchmark-pm-27-line.html#473">init</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">9µs</span></td><td class="c1"><span title="0.0%">91µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::import</span>Benchmark::<a href="Benchmark-pm-27-line.html#460">import</a></td></tr>
<tr><td class="c1">3</td><td class="c0">3</td><td class="c3">1</td><td class="c3"><span title="0.0%">7µs</span></td><td class="c3"><span title="0.0%">7µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::CORE:sort</span>Benchmark::<a href="Benchmark-pm-27-line.html#Benchmark__CORE_sort">CORE:sort</a> (opcode)</td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">7µs</span></td><td class="c3"><span title="0.0%">38µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::BEGIN@432</span>Benchmark::<a href="Benchmark-pm-27-line.html#432">BEGIN@432</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">6µs</span></td><td class="c3"><span title="0.0%">19µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::BEGIN@433</span>Benchmark::<a href="Benchmark-pm-27-line.html#433">BEGIN@433</a></td></tr>
<tr><td class="c3">2</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">6µs</span></td><td class="c3"><span title="0.0%">6µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::cpu_a</span>Benchmark::<a href="Benchmark-pm-27-line.html#542">cpu_a</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">6µs</span></td><td class="c3"><span title="0.0%">16µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::BEGIN@426</span>Benchmark::<a href="Benchmark-pm-27-line.html#426">BEGIN@426</a></td></tr>
<tr><td class="c3">2</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">4µs</span></td><td class="c3"><span title="0.0%">4µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::real</span>Benchmark::<a href="Benchmark-pm-27-line.html#543">real</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">1µs</span></td><td class="c3"><span title="0.0%">1µs</span></td><td class="sub_name"><span style="display: none;">Benchmark::::clearallcache</span>Benchmark::<a href="Benchmark-pm-27-line.html#510">clearallcache</a></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">800ns</span></td><td class="c3"><span title="0.0%">800ns</span></td><td class="sub_name"><span style="display: none;">Benchmark::::disablecache</span>Benchmark::<a href="Benchmark-pm-27-line.html#528">disablecache</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::_doeval</span>Benchmark::<a href="Benchmark-pm-27-line.html#426">_doeval</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::clearcache</span>Benchmark::<a href="Benchmark-pm-27-line.html#501">clearcache</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::countit</span>Benchmark::<a href="Benchmark-pm-27-line.html#714">countit</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::cpu_c</span>Benchmark::<a href="Benchmark-pm-27-line.html#541">cpu_c</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::cpu_p</span>Benchmark::<a href="Benchmark-pm-27-line.html#540">cpu_p</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::debug</span>Benchmark::<a href="Benchmark-pm-27-line.html#486">debug</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::enablecache</span>Benchmark::<a href="Benchmark-pm-27-line.html#519">enablecache</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::iters</span>Benchmark::<a href="Benchmark-pm-27-line.html#544">iters</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::n_to_for</span>Benchmark::<a href="Benchmark-pm-27-line.html#802">n_to_for</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::timestr</span>Benchmark::<a href="Benchmark-pm-27-line.html#586">timestr</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::timesum</span>Benchmark::<a href="Benchmark-pm-27-line.html#569">timesum</a></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">Benchmark::::usage</span>Benchmark::<a href="Benchmark-pm-27-line.html#488">usage</a></td></tr>
</tbody></table>
Call graph for these subroutines as a
<a href="http://en.wikipedia.org/wiki/Graphviz">Graphviz</a>
<a href="Users-dde-perl5-perlbrew-perls-5-18-0t-lib-5-18-0-Benchmark-pm.dot">dot language file</a>.
<table border="1" cellpadding="0">
<thead>
<tr><th>Line</th>
<th><span title="Number of statements executed">State<br />ments</span></th>
<th><span title="Time spend executing statements on the line,
excluding time spent executing statements in any called subroutines">Time<br />on line</span></th>
<th><span title="Number of subroutines calls">Calls</span></th>
<th><span title="Time spent in subroutines called (inclusive)">Time<br />in subs</span></th>
<th class="left_indent_header">Code</th>
</tr>
</thead>
<tbody>
<tr><td class="h"><a name="1"></a>1</td><td></td><td></td><td></td><td></td><td class="s">package Benchmark;</td></tr>
<tr><td class="h"><a name="2"></a>2</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="3"></a>3</td><td class="c3">2</td><td class="c0"><span title="Avg 101µs">202µs</span></td><td class="c3">2</td><td class="c3">31µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 20µs (10+11) within Benchmark::BEGIN@3 which was called:
# once (10µs+11µs) by main::BEGIN@4 at <a href="Benchmark-pm-27-line.html#3">line 3</a></div></div>use strict;<div class="calls"><div class="calls_out"># spent 20µs making 1 call to <a href="Benchmark-pm-27-line.html#3">Benchmark::BEGIN@3</a>
# spent 11µs making 1 call to <a href="strict-pm-3-line.html#42">strict::import</a></div></div></td></tr>
<tr><td class="h"><a name="4"></a>4</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="5"></a>5</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="6"></a>6</td><td></td><td></td><td></td><td></td><td class="s">=head1 NAME</td></tr>
<tr><td class="h"><a name="7"></a>7</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="8"></a>8</td><td></td><td></td><td></td><td></td><td class="s">Benchmark - benchmark running times of Perl code</td></tr>
<tr><td class="h"><a name="9"></a>9</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="10"></a>10</td><td></td><td></td><td></td><td></td><td class="s">=head1 SYNOPSIS</td></tr>
<tr><td class="h"><a name="11"></a>11</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="12"></a>12</td><td></td><td></td><td></td><td></td><td class="s"> use Benchmark qw(:all) ;</td></tr>
<tr><td class="h"><a name="13"></a>13</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="14"></a>14</td><td></td><td></td><td></td><td></td><td class="s"> timethis ($count, "code");</td></tr>
<tr><td class="h"><a name="15"></a>15</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="16"></a>16</td><td></td><td></td><td></td><td></td><td class="s"> # Use Perl code in strings...</td></tr>
<tr><td class="h"><a name="17"></a>17</td><td></td><td></td><td></td><td></td><td class="s"> timethese($count, {</td></tr>
<tr><td class="h"><a name="18"></a>18</td><td></td><td></td><td></td><td></td><td class="s"> 'Name1' => '...code1...',</td></tr>
<tr><td class="h"><a name="19"></a>19</td><td></td><td></td><td></td><td></td><td class="s"> 'Name2' => '...code2...',</td></tr>
<tr><td class="h"><a name="20"></a>20</td><td></td><td></td><td></td><td></td><td class="s"> });</td></tr>
<tr><td class="h"><a name="21"></a>21</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="22"></a>22</td><td></td><td></td><td></td><td></td><td class="s"> # ... or use subroutine references.</td></tr>
<tr><td class="h"><a name="23"></a>23</td><td></td><td></td><td></td><td></td><td class="s"> timethese($count, {</td></tr>
<tr><td class="h"><a name="24"></a>24</td><td></td><td></td><td></td><td></td><td class="s"> 'Name1' => sub { ...code1... },</td></tr>
<tr><td class="h"><a name="25"></a>25</td><td></td><td></td><td></td><td></td><td class="s"> 'Name2' => sub { ...code2... },</td></tr>
<tr><td class="h"><a name="26"></a>26</td><td></td><td></td><td></td><td></td><td class="s"> });</td></tr>
<tr><td class="h"><a name="27"></a>27</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="28"></a>28</td><td></td><td></td><td></td><td></td><td class="s"> # cmpthese can be used both ways as well</td></tr>
<tr><td class="h"><a name="29"></a>29</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese($count, {</td></tr>
<tr><td class="h"><a name="30"></a>30</td><td></td><td></td><td></td><td></td><td class="s"> 'Name1' => '...code1...',</td></tr>
<tr><td class="h"><a name="31"></a>31</td><td></td><td></td><td></td><td></td><td class="s"> 'Name2' => '...code2...',</td></tr>
<tr><td class="h"><a name="32"></a>32</td><td></td><td></td><td></td><td></td><td class="s"> });</td></tr>
<tr><td class="h"><a name="33"></a>33</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="34"></a>34</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese($count, {</td></tr>
<tr><td class="h"><a name="35"></a>35</td><td></td><td></td><td></td><td></td><td class="s"> 'Name1' => sub { ...code1... },</td></tr>
<tr><td class="h"><a name="36"></a>36</td><td></td><td></td><td></td><td></td><td class="s"> 'Name2' => sub { ...code2... },</td></tr>
<tr><td class="h"><a name="37"></a>37</td><td></td><td></td><td></td><td></td><td class="s"> });</td></tr>
<tr><td class="h"><a name="38"></a>38</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="39"></a>39</td><td></td><td></td><td></td><td></td><td class="s"> # ...or in two stages</td></tr>
<tr><td class="h"><a name="40"></a>40</td><td></td><td></td><td></td><td></td><td class="s"> $results = timethese($count, </td></tr>
<tr><td class="h"><a name="41"></a>41</td><td></td><td></td><td></td><td></td><td class="s"> {</td></tr>
<tr><td class="h"><a name="42"></a>42</td><td></td><td></td><td></td><td></td><td class="s"> 'Name1' => sub { ...code1... },</td></tr>
<tr><td class="h"><a name="43"></a>43</td><td></td><td></td><td></td><td></td><td class="s"> 'Name2' => sub { ...code2... },</td></tr>
<tr><td class="h"><a name="44"></a>44</td><td></td><td></td><td></td><td></td><td class="s"> },</td></tr>
<tr><td class="h"><a name="45"></a>45</td><td></td><td></td><td></td><td></td><td class="s"> 'none'</td></tr>
<tr><td class="h"><a name="46"></a>46</td><td></td><td></td><td></td><td></td><td class="s"> );</td></tr>
<tr><td class="h"><a name="47"></a>47</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese( $results ) ;</td></tr>
<tr><td class="h"><a name="48"></a>48</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="49"></a>49</td><td></td><td></td><td></td><td></td><td class="s"> $t = timeit($count, '...other code...')</td></tr>
<tr><td class="h"><a name="50"></a>50</td><td></td><td></td><td></td><td></td><td class="s"> print "$count loops of other code took:",timestr($t),"\n";</td></tr>
<tr><td class="h"><a name="51"></a>51</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="52"></a>52</td><td></td><td></td><td></td><td></td><td class="s"> $t = countit($time, '...other code...')</td></tr>
<tr><td class="h"><a name="53"></a>53</td><td></td><td></td><td></td><td></td><td class="s"> $count = $t->iters ;</td></tr>
<tr><td class="h"><a name="54"></a>54</td><td></td><td></td><td></td><td></td><td class="s"> print "$count loops of other code took:",timestr($t),"\n";</td></tr>
<tr><td class="h"><a name="55"></a>55</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="56"></a>56</td><td></td><td></td><td></td><td></td><td class="s"> # enable hires wallclock timing if possible</td></tr>
<tr><td class="h"><a name="57"></a>57</td><td></td><td></td><td></td><td></td><td class="s"> use Benchmark ':hireswallclock';</td></tr>
<tr><td class="h"><a name="58"></a>58</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="59"></a>59</td><td></td><td></td><td></td><td></td><td class="s">=head1 DESCRIPTION</td></tr>
<tr><td class="h"><a name="60"></a>60</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="61"></a>61</td><td></td><td></td><td></td><td></td><td class="s">The Benchmark module encapsulates a number of routines to help you</td></tr>
<tr><td class="h"><a name="62"></a>62</td><td></td><td></td><td></td><td></td><td class="s">figure out how long it takes to execute some code.</td></tr>
<tr><td class="h"><a name="63"></a>63</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="64"></a>64</td><td></td><td></td><td></td><td></td><td class="s">timethis - run a chunk of code several times</td></tr>
<tr><td class="h"><a name="65"></a>65</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="66"></a>66</td><td></td><td></td><td></td><td></td><td class="s">timethese - run several chunks of code several times</td></tr>
<tr><td class="h"><a name="67"></a>67</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="68"></a>68</td><td></td><td></td><td></td><td></td><td class="s">cmpthese - print results of timethese as a comparison chart</td></tr>
<tr><td class="h"><a name="69"></a>69</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="70"></a>70</td><td></td><td></td><td></td><td></td><td class="s">timeit - run a chunk of code and see how long it goes</td></tr>
<tr><td class="h"><a name="71"></a>71</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="72"></a>72</td><td></td><td></td><td></td><td></td><td class="s">countit - see how many times a chunk of code runs in a given time</td></tr>
<tr><td class="h"><a name="73"></a>73</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="74"></a>74</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="75"></a>75</td><td></td><td></td><td></td><td></td><td class="s">=head2 Methods</td></tr>
<tr><td class="h"><a name="76"></a>76</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="77"></a>77</td><td></td><td></td><td></td><td></td><td class="s">=over 10</td></tr>
<tr><td class="h"><a name="78"></a>78</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="79"></a>79</td><td></td><td></td><td></td><td></td><td class="s">=item new</td></tr>
<tr><td class="h"><a name="80"></a>80</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="81"></a>81</td><td></td><td></td><td></td><td></td><td class="s">Returns the current time. Example:</td></tr>
<tr><td class="h"><a name="82"></a>82</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="83"></a>83</td><td></td><td></td><td></td><td></td><td class="s"> use Benchmark;</td></tr>
<tr><td class="h"><a name="84"></a>84</td><td></td><td></td><td></td><td></td><td class="s"> $t0 = Benchmark->new;</td></tr>
<tr><td class="h"><a name="85"></a>85</td><td></td><td></td><td></td><td></td><td class="s"> # ... your code here ...</td></tr>
<tr><td class="h"><a name="86"></a>86</td><td></td><td></td><td></td><td></td><td class="s"> $t1 = Benchmark->new;</td></tr>
<tr><td class="h"><a name="87"></a>87</td><td></td><td></td><td></td><td></td><td class="s"> $td = timediff($t1, $t0);</td></tr>
<tr><td class="h"><a name="88"></a>88</td><td></td><td></td><td></td><td></td><td class="s"> print "the code took:",timestr($td),"\n";</td></tr>
<tr><td class="h"><a name="89"></a>89</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="90"></a>90</td><td></td><td></td><td></td><td></td><td class="s">=item debug</td></tr>
<tr><td class="h"><a name="91"></a>91</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="92"></a>92</td><td></td><td></td><td></td><td></td><td class="s">Enables or disable debugging by setting the C<$Benchmark::Debug> flag:</td></tr>
<tr><td class="h"><a name="93"></a>93</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="94"></a>94</td><td></td><td></td><td></td><td></td><td class="s"> Benchmark->debug(1);</td></tr>
<tr><td class="h"><a name="95"></a>95</td><td></td><td></td><td></td><td></td><td class="s"> $t = timeit(10, ' 5 ** $Global ');</td></tr>
<tr><td class="h"><a name="96"></a>96</td><td></td><td></td><td></td><td></td><td class="s"> Benchmark->debug(0);</td></tr>
<tr><td class="h"><a name="97"></a>97</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="98"></a>98</td><td></td><td></td><td></td><td></td><td class="s">=item iters</td></tr>
<tr><td class="h"><a name="99"></a>99</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="100"></a>100</td><td></td><td></td><td></td><td></td><td class="s">Returns the number of iterations.</td></tr>
<tr><td class="h"><a name="101"></a>101</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="102"></a>102</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
<tr><td class="h"><a name="103"></a>103</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="104"></a>104</td><td></td><td></td><td></td><td></td><td class="s">=head2 Standard Exports</td></tr>
<tr><td class="h"><a name="105"></a>105</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="106"></a>106</td><td></td><td></td><td></td><td></td><td class="s">The following routines will be exported into your namespace</td></tr>
<tr><td class="h"><a name="107"></a>107</td><td></td><td></td><td></td><td></td><td class="s">if you use the Benchmark module:</td></tr>
<tr><td class="h"><a name="108"></a>108</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="109"></a>109</td><td></td><td></td><td></td><td></td><td class="s">=over 10</td></tr>
<tr><td class="h"><a name="110"></a>110</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="111"></a>111</td><td></td><td></td><td></td><td></td><td class="s">=item timeit(COUNT, CODE)</td></tr>
<tr><td class="h"><a name="112"></a>112</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="113"></a>113</td><td></td><td></td><td></td><td></td><td class="s">Arguments: COUNT is the number of times to run the loop, and CODE is</td></tr>
<tr><td class="h"><a name="114"></a>114</td><td></td><td></td><td></td><td></td><td class="s">the code to run. CODE may be either a code reference or a string to</td></tr>
<tr><td class="h"><a name="115"></a>115</td><td></td><td></td><td></td><td></td><td class="s">be eval'd; either way it will be run in the caller's package.</td></tr>
<tr><td class="h"><a name="116"></a>116</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="117"></a>117</td><td></td><td></td><td></td><td></td><td class="s">Returns: a Benchmark object.</td></tr>
<tr><td class="h"><a name="118"></a>118</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="119"></a>119</td><td></td><td></td><td></td><td></td><td class="s">=item timethis ( COUNT, CODE, [ TITLE, [ STYLE ]] )</td></tr>
<tr><td class="h"><a name="120"></a>120</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="121"></a>121</td><td></td><td></td><td></td><td></td><td class="s">Time COUNT iterations of CODE. CODE may be a string to eval or a</td></tr>
<tr><td class="h"><a name="122"></a>122</td><td></td><td></td><td></td><td></td><td class="s">code reference; either way the CODE will run in the caller's package.</td></tr>
<tr><td class="h"><a name="123"></a>123</td><td></td><td></td><td></td><td></td><td class="s">Results will be printed to STDOUT as TITLE followed by the times.</td></tr>
<tr><td class="h"><a name="124"></a>124</td><td></td><td></td><td></td><td></td><td class="s">TITLE defaults to "timethis COUNT" if none is provided. STYLE</td></tr>
<tr><td class="h"><a name="125"></a>125</td><td></td><td></td><td></td><td></td><td class="s">determines the format of the output, as described for timestr() below.</td></tr>
<tr><td class="h"><a name="126"></a>126</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="127"></a>127</td><td></td><td></td><td></td><td></td><td class="s">The COUNT can be zero or negative: this means the I<minimum number of</td></tr>
<tr><td class="h"><a name="128"></a>128</td><td></td><td></td><td></td><td></td><td class="s">CPU seconds> to run. A zero signifies the default of 3 seconds. For</td></tr>
<tr><td class="h"><a name="129"></a>129</td><td></td><td></td><td></td><td></td><td class="s">example to run at least for 10 seconds:</td></tr>
<tr><td class="h"><a name="130"></a>130</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="131"></a>131</td><td></td><td></td><td></td><td></td><td class="s"> timethis(-10, $code)</td></tr>
<tr><td class="h"><a name="132"></a>132</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="133"></a>133</td><td></td><td></td><td></td><td></td><td class="s">or to run two pieces of code tests for at least 3 seconds:</td></tr>
<tr><td class="h"><a name="134"></a>134</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="135"></a>135</td><td></td><td></td><td></td><td></td><td class="s"> timethese(0, { test1 => '...', test2 => '...'})</td></tr>
<tr><td class="h"><a name="136"></a>136</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="137"></a>137</td><td></td><td></td><td></td><td></td><td class="s">CPU seconds is, in UNIX terms, the user time plus the system time of</td></tr>
<tr><td class="h"><a name="138"></a>138</td><td></td><td></td><td></td><td></td><td class="s">the process itself, as opposed to the real (wallclock) time and the</td></tr>
<tr><td class="h"><a name="139"></a>139</td><td></td><td></td><td></td><td></td><td class="s">time spent by the child processes. Less than 0.1 seconds is not</td></tr>
<tr><td class="h"><a name="140"></a>140</td><td></td><td></td><td></td><td></td><td class="s">accepted (-0.01 as the count, for example, will cause a fatal runtime</td></tr>
<tr><td class="h"><a name="141"></a>141</td><td></td><td></td><td></td><td></td><td class="s">exception).</td></tr>
<tr><td class="h"><a name="142"></a>142</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="143"></a>143</td><td></td><td></td><td></td><td></td><td class="s">Note that the CPU seconds is the B<minimum> time: CPU scheduling and</td></tr>
<tr><td class="h"><a name="144"></a>144</td><td></td><td></td><td></td><td></td><td class="s">other operating system factors may complicate the attempt so that a</td></tr>
<tr><td class="h"><a name="145"></a>145</td><td></td><td></td><td></td><td></td><td class="s">little bit more time is spent. The benchmark output will, however,</td></tr>
<tr><td class="h"><a name="146"></a>146</td><td></td><td></td><td></td><td></td><td class="s">also tell the number of C<$code> runs/second, which should be a more</td></tr>
<tr><td class="h"><a name="147"></a>147</td><td></td><td></td><td></td><td></td><td class="s">interesting number than the actually spent seconds.</td></tr>
<tr><td class="h"><a name="148"></a>148</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="149"></a>149</td><td></td><td></td><td></td><td></td><td class="s">Returns a Benchmark object.</td></tr>
<tr><td class="h"><a name="150"></a>150</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="151"></a>151</td><td></td><td></td><td></td><td></td><td class="s">=item timethese ( COUNT, CODEHASHREF, [ STYLE ] )</td></tr>
<tr><td class="h"><a name="152"></a>152</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="153"></a>153</td><td></td><td></td><td></td><td></td><td class="s">The CODEHASHREF is a reference to a hash containing names as keys</td></tr>
<tr><td class="h"><a name="154"></a>154</td><td></td><td></td><td></td><td></td><td class="s">and either a string to eval or a code reference for each value.</td></tr>
<tr><td class="h"><a name="155"></a>155</td><td></td><td></td><td></td><td></td><td class="s">For each (KEY, VALUE) pair in the CODEHASHREF, this routine will</td></tr>
<tr><td class="h"><a name="156"></a>156</td><td></td><td></td><td></td><td></td><td class="s">call</td></tr>
<tr><td class="h"><a name="157"></a>157</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="158"></a>158</td><td></td><td></td><td></td><td></td><td class="s"> timethis(COUNT, VALUE, KEY, STYLE)</td></tr>
<tr><td class="h"><a name="159"></a>159</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="160"></a>160</td><td></td><td></td><td></td><td></td><td class="s">The routines are called in string comparison order of KEY.</td></tr>
<tr><td class="h"><a name="161"></a>161</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="162"></a>162</td><td></td><td></td><td></td><td></td><td class="s">The COUNT can be zero or negative, see timethis().</td></tr>
<tr><td class="h"><a name="163"></a>163</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="164"></a>164</td><td></td><td></td><td></td><td></td><td class="s">Returns a hash reference of Benchmark objects, keyed by name.</td></tr>
<tr><td class="h"><a name="165"></a>165</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="166"></a>166</td><td></td><td></td><td></td><td></td><td class="s">=item timediff ( T1, T2 )</td></tr>
<tr><td class="h"><a name="167"></a>167</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="168"></a>168</td><td></td><td></td><td></td><td></td><td class="s">Returns the difference between two Benchmark times as a Benchmark</td></tr>
<tr><td class="h"><a name="169"></a>169</td><td></td><td></td><td></td><td></td><td class="s">object suitable for passing to timestr().</td></tr>
<tr><td class="h"><a name="170"></a>170</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="171"></a>171</td><td></td><td></td><td></td><td></td><td class="s">=item timestr ( TIMEDIFF, [ STYLE, [ FORMAT ] ] )</td></tr>
<tr><td class="h"><a name="172"></a>172</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="173"></a>173</td><td></td><td></td><td></td><td></td><td class="s">Returns a string that formats the times in the TIMEDIFF object in</td></tr>
<tr><td class="h"><a name="174"></a>174</td><td></td><td></td><td></td><td></td><td class="s">the requested STYLE. TIMEDIFF is expected to be a Benchmark object</td></tr>
<tr><td class="h"><a name="175"></a>175</td><td></td><td></td><td></td><td></td><td class="s">similar to that returned by timediff().</td></tr>
<tr><td class="h"><a name="176"></a>176</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="177"></a>177</td><td></td><td></td><td></td><td></td><td class="s">STYLE can be any of 'all', 'none', 'noc', 'nop' or 'auto'. 'all' shows</td></tr>
<tr><td class="h"><a name="178"></a>178</td><td></td><td></td><td></td><td></td><td class="s">each of the 5 times available ('wallclock' time, user time, system time,</td></tr>
<tr><td class="h"><a name="179"></a>179</td><td></td><td></td><td></td><td></td><td class="s">user time of children, and system time of children). 'noc' shows all</td></tr>
<tr><td class="h"><a name="180"></a>180</td><td></td><td></td><td></td><td></td><td class="s">except the two children times. 'nop' shows only wallclock and the</td></tr>
<tr><td class="h"><a name="181"></a>181</td><td></td><td></td><td></td><td></td><td class="s">two children times. 'auto' (the default) will act as 'all' unless</td></tr>
<tr><td class="h"><a name="182"></a>182</td><td></td><td></td><td></td><td></td><td class="s">the children times are both zero, in which case it acts as 'noc'.</td></tr>
<tr><td class="h"><a name="183"></a>183</td><td></td><td></td><td></td><td></td><td class="s">'none' prevents output.</td></tr>
<tr><td class="h"><a name="184"></a>184</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="185"></a>185</td><td></td><td></td><td></td><td></td><td class="s">FORMAT is the L<printf(3)>-style format specifier (without the</td></tr>
<tr><td class="h"><a name="186"></a>186</td><td></td><td></td><td></td><td></td><td class="s">leading '%') to use to print the times. It defaults to '5.2f'.</td></tr>
<tr><td class="h"><a name="187"></a>187</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="188"></a>188</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
<tr><td class="h"><a name="189"></a>189</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="190"></a>190</td><td></td><td></td><td></td><td></td><td class="s">=head2 Optional Exports</td></tr>
<tr><td class="h"><a name="191"></a>191</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="192"></a>192</td><td></td><td></td><td></td><td></td><td class="s">The following routines will be exported into your namespace</td></tr>
<tr><td class="h"><a name="193"></a>193</td><td></td><td></td><td></td><td></td><td class="s">if you specifically ask that they be imported:</td></tr>
<tr><td class="h"><a name="194"></a>194</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="195"></a>195</td><td></td><td></td><td></td><td></td><td class="s">=over 10</td></tr>
<tr><td class="h"><a name="196"></a>196</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="197"></a>197</td><td></td><td></td><td></td><td></td><td class="s">=item clearcache ( COUNT )</td></tr>
<tr><td class="h"><a name="198"></a>198</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="199"></a>199</td><td></td><td></td><td></td><td></td><td class="s">Clear the cached time for COUNT rounds of the null loop.</td></tr>
<tr><td class="h"><a name="200"></a>200</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="201"></a>201</td><td></td><td></td><td></td><td></td><td class="s">=item clearallcache ( )</td></tr>
<tr><td class="h"><a name="202"></a>202</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="203"></a>203</td><td></td><td></td><td></td><td></td><td class="s">Clear all cached times.</td></tr>
<tr><td class="h"><a name="204"></a>204</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="205"></a>205</td><td></td><td></td><td></td><td></td><td class="s">=item cmpthese ( COUNT, CODEHASHREF, [ STYLE ] )</td></tr>
<tr><td class="h"><a name="206"></a>206</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="207"></a>207</td><td></td><td></td><td></td><td></td><td class="s">=item cmpthese ( RESULTSHASHREF, [ STYLE ] )</td></tr>
<tr><td class="h"><a name="208"></a>208</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="209"></a>209</td><td></td><td></td><td></td><td></td><td class="s">Optionally calls timethese(), then outputs comparison chart. This:</td></tr>
<tr><td class="h"><a name="210"></a>210</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="211"></a>211</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese( -1, { a => "++\$i", b => "\$i *= 2" } ) ;</td></tr>
<tr><td class="h"><a name="212"></a>212</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="213"></a>213</td><td></td><td></td><td></td><td></td><td class="s">outputs a chart like:</td></tr>
<tr><td class="h"><a name="214"></a>214</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="215"></a>215</td><td></td><td></td><td></td><td></td><td class="s"> Rate b a</td></tr>
<tr><td class="h"><a name="216"></a>216</td><td></td><td></td><td></td><td></td><td class="s"> b 2831802/s -- -61%</td></tr>
<tr><td class="h"><a name="217"></a>217</td><td></td><td></td><td></td><td></td><td class="s"> a 7208959/s 155% --</td></tr>
<tr><td class="h"><a name="218"></a>218</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="219"></a>219</td><td></td><td></td><td></td><td></td><td class="s">This chart is sorted from slowest to fastest, and shows the percent speed</td></tr>
<tr><td class="h"><a name="220"></a>220</td><td></td><td></td><td></td><td></td><td class="s">difference between each pair of tests.</td></tr>
<tr><td class="h"><a name="221"></a>221</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="222"></a>222</td><td></td><td></td><td></td><td></td><td class="s">C<cmpthese> can also be passed the data structure that timethese() returns:</td></tr>
<tr><td class="h"><a name="223"></a>223</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="224"></a>224</td><td></td><td></td><td></td><td></td><td class="s"> $results = timethese( -1, { a => "++\$i", b => "\$i *= 2" } ) ;</td></tr>
<tr><td class="h"><a name="225"></a>225</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese( $results );</td></tr>
<tr><td class="h"><a name="226"></a>226</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="227"></a>227</td><td></td><td></td><td></td><td></td><td class="s">in case you want to see both sets of results.</td></tr>
<tr><td class="h"><a name="228"></a>228</td><td></td><td></td><td></td><td></td><td class="s">If the first argument is an unblessed hash reference,</td></tr>
<tr><td class="h"><a name="229"></a>229</td><td></td><td></td><td></td><td></td><td class="s">that is RESULTSHASHREF; otherwise that is COUNT.</td></tr>
<tr><td class="h"><a name="230"></a>230</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="231"></a>231</td><td></td><td></td><td></td><td></td><td class="s">Returns a reference to an ARRAY of rows, each row is an ARRAY of cells from the</td></tr>
<tr><td class="h"><a name="232"></a>232</td><td></td><td></td><td></td><td></td><td class="s">above chart, including labels. This:</td></tr>
<tr><td class="h"><a name="233"></a>233</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="234"></a>234</td><td></td><td></td><td></td><td></td><td class="s"> my $rows = cmpthese( -1, { a => '++$i', b => '$i *= 2' }, "none" );</td></tr>
<tr><td class="h"><a name="235"></a>235</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="236"></a>236</td><td></td><td></td><td></td><td></td><td class="s">returns a data structure like:</td></tr>
<tr><td class="h"><a name="237"></a>237</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="238"></a>238</td><td></td><td></td><td></td><td></td><td class="s"> [</td></tr>
<tr><td class="h"><a name="239"></a>239</td><td></td><td></td><td></td><td></td><td class="s"> [ '', 'Rate', 'b', 'a' ],</td></tr>
<tr><td class="h"><a name="240"></a>240</td><td></td><td></td><td></td><td></td><td class="s"> [ 'b', '2885232/s', '--', '-59%' ],</td></tr>
<tr><td class="h"><a name="241"></a>241</td><td></td><td></td><td></td><td></td><td class="s"> [ 'a', '7099126/s', '146%', '--' ],</td></tr>
<tr><td class="h"><a name="242"></a>242</td><td></td><td></td><td></td><td></td><td class="s"> ]</td></tr>
<tr><td class="h"><a name="243"></a>243</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="244"></a>244</td><td></td><td></td><td></td><td></td><td class="s">B<NOTE>: This result value differs from previous versions, which returned</td></tr>
<tr><td class="h"><a name="245"></a>245</td><td></td><td></td><td></td><td></td><td class="s">the C<timethese()> result structure. If you want that, just use the two</td></tr>
<tr><td class="h"><a name="246"></a>246</td><td></td><td></td><td></td><td></td><td class="s">statement C<timethese>...C<cmpthese> idiom shown above.</td></tr>
<tr><td class="h"><a name="247"></a>247</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="248"></a>248</td><td></td><td></td><td></td><td></td><td class="s">Incidentally, note the variance in the result values between the two examples;</td></tr>
<tr><td class="h"><a name="249"></a>249</td><td></td><td></td><td></td><td></td><td class="s">this is typical of benchmarking. If this were a real benchmark, you would</td></tr>
<tr><td class="h"><a name="250"></a>250</td><td></td><td></td><td></td><td></td><td class="s">probably want to run a lot more iterations.</td></tr>
<tr><td class="h"><a name="251"></a>251</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="252"></a>252</td><td></td><td></td><td></td><td></td><td class="s">=item countit(TIME, CODE)</td></tr>
<tr><td class="h"><a name="253"></a>253</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="254"></a>254</td><td></td><td></td><td></td><td></td><td class="s">Arguments: TIME is the minimum length of time to run CODE for, and CODE is</td></tr>
<tr><td class="h"><a name="255"></a>255</td><td></td><td></td><td></td><td></td><td class="s">the code to run. CODE may be either a code reference or a string to</td></tr>
<tr><td class="h"><a name="256"></a>256</td><td></td><td></td><td></td><td></td><td class="s">be eval'd; either way it will be run in the caller's package.</td></tr>
<tr><td class="h"><a name="257"></a>257</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="258"></a>258</td><td></td><td></td><td></td><td></td><td class="s">TIME is I<not> negative. countit() will run the loop many times to</td></tr>
<tr><td class="h"><a name="259"></a>259</td><td></td><td></td><td></td><td></td><td class="s">calculate the speed of CODE before running it for TIME. The actual</td></tr>
<tr><td class="h"><a name="260"></a>260</td><td></td><td></td><td></td><td></td><td class="s">time run for will usually be greater than TIME due to system clock</td></tr>
<tr><td class="h"><a name="261"></a>261</td><td></td><td></td><td></td><td></td><td class="s">resolution, so it's best to look at the number of iterations divided</td></tr>
<tr><td class="h"><a name="262"></a>262</td><td></td><td></td><td></td><td></td><td class="s">by the times that you are concerned with, not just the iterations.</td></tr>
<tr><td class="h"><a name="263"></a>263</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="264"></a>264</td><td></td><td></td><td></td><td></td><td class="s">Returns: a Benchmark object.</td></tr>
<tr><td class="h"><a name="265"></a>265</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="266"></a>266</td><td></td><td></td><td></td><td></td><td class="s">=item disablecache ( )</td></tr>
<tr><td class="h"><a name="267"></a>267</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="268"></a>268</td><td></td><td></td><td></td><td></td><td class="s">Disable caching of timings for the null loop. This will force Benchmark</td></tr>
<tr><td class="h"><a name="269"></a>269</td><td></td><td></td><td></td><td></td><td class="s">to recalculate these timings for each new piece of code timed.</td></tr>
<tr><td class="h"><a name="270"></a>270</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="271"></a>271</td><td></td><td></td><td></td><td></td><td class="s">=item enablecache ( )</td></tr>
<tr><td class="h"><a name="272"></a>272</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="273"></a>273</td><td></td><td></td><td></td><td></td><td class="s">Enable caching of timings for the null loop. The time taken for COUNT</td></tr>
<tr><td class="h"><a name="274"></a>274</td><td></td><td></td><td></td><td></td><td class="s">rounds of the null loop will be calculated only once for each</td></tr>
<tr><td class="h"><a name="275"></a>275</td><td></td><td></td><td></td><td></td><td class="s">different COUNT used.</td></tr>
<tr><td class="h"><a name="276"></a>276</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="277"></a>277</td><td></td><td></td><td></td><td></td><td class="s">=item timesum ( T1, T2 )</td></tr>
<tr><td class="h"><a name="278"></a>278</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="279"></a>279</td><td></td><td></td><td></td><td></td><td class="s">Returns the sum of two Benchmark times as a Benchmark object suitable</td></tr>
<tr><td class="h"><a name="280"></a>280</td><td></td><td></td><td></td><td></td><td class="s">for passing to timestr().</td></tr>
<tr><td class="h"><a name="281"></a>281</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="282"></a>282</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
<tr><td class="h"><a name="283"></a>283</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="284"></a>284</td><td></td><td></td><td></td><td></td><td class="s">=head2 :hireswallclock</td></tr>
<tr><td class="h"><a name="285"></a>285</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="286"></a>286</td><td></td><td></td><td></td><td></td><td class="s">If the Time::HiRes module has been installed, you can specify the</td></tr>
<tr><td class="h"><a name="287"></a>287</td><td></td><td></td><td></td><td></td><td class="s">special tag C<:hireswallclock> for Benchmark (if Time::HiRes is not</td></tr>
<tr><td class="h"><a name="288"></a>288</td><td></td><td></td><td></td><td></td><td class="s">available, the tag will be silently ignored). This tag will cause the</td></tr>
<tr><td class="h"><a name="289"></a>289</td><td></td><td></td><td></td><td></td><td class="s">wallclock time to be measured in microseconds, instead of integer</td></tr>
<tr><td class="h"><a name="290"></a>290</td><td></td><td></td><td></td><td></td><td class="s">seconds. Note though that the speed computations are still conducted</td></tr>
<tr><td class="h"><a name="291"></a>291</td><td></td><td></td><td></td><td></td><td class="s">in CPU time, not wallclock time.</td></tr>
<tr><td class="h"><a name="292"></a>292</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="293"></a>293</td><td></td><td></td><td></td><td></td><td class="s">=head1 NOTES</td></tr>
<tr><td class="h"><a name="294"></a>294</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="295"></a>295</td><td></td><td></td><td></td><td></td><td class="s">The data is stored as a list of values from the time and times</td></tr>
<tr><td class="h"><a name="296"></a>296</td><td></td><td></td><td></td><td></td><td class="s">functions:</td></tr>
<tr><td class="h"><a name="297"></a>297</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="298"></a>298</td><td></td><td></td><td></td><td></td><td class="s"> ($real, $user, $system, $children_user, $children_system, $iters)</td></tr>
<tr><td class="h"><a name="299"></a>299</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="300"></a>300</td><td></td><td></td><td></td><td></td><td class="s">in seconds for the whole loop (not divided by the number of rounds).</td></tr>
<tr><td class="h"><a name="301"></a>301</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="302"></a>302</td><td></td><td></td><td></td><td></td><td class="s">The timing is done using time(3) and times(3).</td></tr>
<tr><td class="h"><a name="303"></a>303</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="304"></a>304</td><td></td><td></td><td></td><td></td><td class="s">Code is executed in the caller's package.</td></tr>
<tr><td class="h"><a name="305"></a>305</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="306"></a>306</td><td></td><td></td><td></td><td></td><td class="s">The time of the null loop (a loop with the same</td></tr>
<tr><td class="h"><a name="307"></a>307</td><td></td><td></td><td></td><td></td><td class="s">number of rounds but empty loop body) is subtracted</td></tr>
<tr><td class="h"><a name="308"></a>308</td><td></td><td></td><td></td><td></td><td class="s">from the time of the real loop.</td></tr>
<tr><td class="h"><a name="309"></a>309</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="310"></a>310</td><td></td><td></td><td></td><td></td><td class="s">The null loop times can be cached, the key being the</td></tr>
<tr><td class="h"><a name="311"></a>311</td><td></td><td></td><td></td><td></td><td class="s">number of rounds. The caching can be controlled using</td></tr>
<tr><td class="h"><a name="312"></a>312</td><td></td><td></td><td></td><td></td><td class="s">calls like these:</td></tr>
<tr><td class="h"><a name="313"></a>313</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="314"></a>314</td><td></td><td></td><td></td><td></td><td class="s"> clearcache($key);</td></tr>
<tr><td class="h"><a name="315"></a>315</td><td></td><td></td><td></td><td></td><td class="s"> clearallcache();</td></tr>
<tr><td class="h"><a name="316"></a>316</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="317"></a>317</td><td></td><td></td><td></td><td></td><td class="s"> disablecache();</td></tr>
<tr><td class="h"><a name="318"></a>318</td><td></td><td></td><td></td><td></td><td class="s"> enablecache();</td></tr>
<tr><td class="h"><a name="319"></a>319</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="320"></a>320</td><td></td><td></td><td></td><td></td><td class="s">Caching is off by default, as it can (usually slightly) decrease</td></tr>
<tr><td class="h"><a name="321"></a>321</td><td></td><td></td><td></td><td></td><td class="s">accuracy and does not usually noticeably affect runtimes.</td></tr>
<tr><td class="h"><a name="322"></a>322</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="323"></a>323</td><td></td><td></td><td></td><td></td><td class="s">=head1 EXAMPLES</td></tr>
<tr><td class="h"><a name="324"></a>324</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="325"></a>325</td><td></td><td></td><td></td><td></td><td class="s">For example,</td></tr>
<tr><td class="h"><a name="326"></a>326</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="327"></a>327</td><td></td><td></td><td></td><td></td><td class="s"> use Benchmark qw( cmpthese ) ;</td></tr>
<tr><td class="h"><a name="328"></a>328</td><td></td><td></td><td></td><td></td><td class="s"> $x = 3;</td></tr>
<tr><td class="h"><a name="329"></a>329</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese( -5, {</td></tr>
<tr><td class="h"><a name="330"></a>330</td><td></td><td></td><td></td><td></td><td class="s"> a => sub{$x*$x},</td></tr>
<tr><td class="h"><a name="331"></a>331</td><td></td><td></td><td></td><td></td><td class="s"> b => sub{$x**2},</td></tr>
<tr><td class="h"><a name="332"></a>332</td><td></td><td></td><td></td><td></td><td class="s"> } );</td></tr>
<tr><td class="h"><a name="333"></a>333</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="334"></a>334</td><td></td><td></td><td></td><td></td><td class="s">outputs something like this:</td></tr>
<tr><td class="h"><a name="335"></a>335</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="336"></a>336</td><td></td><td></td><td></td><td></td><td class="s"> Benchmark: running a, b, each for at least 5 CPU seconds...</td></tr>
<tr><td class="h"><a name="337"></a>337</td><td></td><td></td><td></td><td></td><td class="s"> Rate b a</td></tr>
<tr><td class="h"><a name="338"></a>338</td><td></td><td></td><td></td><td></td><td class="s"> b 1559428/s -- -62%</td></tr>
<tr><td class="h"><a name="339"></a>339</td><td></td><td></td><td></td><td></td><td class="s"> a 4152037/s 166% --</td></tr>
<tr><td class="h"><a name="340"></a>340</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="341"></a>341</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="342"></a>342</td><td></td><td></td><td></td><td></td><td class="s">while </td></tr>
<tr><td class="h"><a name="343"></a>343</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="344"></a>344</td><td></td><td></td><td></td><td></td><td class="s"> use Benchmark qw( timethese cmpthese ) ;</td></tr>
<tr><td class="h"><a name="345"></a>345</td><td></td><td></td><td></td><td></td><td class="s"> $x = 3;</td></tr>
<tr><td class="h"><a name="346"></a>346</td><td></td><td></td><td></td><td></td><td class="s"> $r = timethese( -5, {</td></tr>
<tr><td class="h"><a name="347"></a>347</td><td></td><td></td><td></td><td></td><td class="s"> a => sub{$x*$x},</td></tr>
<tr><td class="h"><a name="348"></a>348</td><td></td><td></td><td></td><td></td><td class="s"> b => sub{$x**2},</td></tr>
<tr><td class="h"><a name="349"></a>349</td><td></td><td></td><td></td><td></td><td class="s"> } );</td></tr>
<tr><td class="h"><a name="350"></a>350</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese $r;</td></tr>
<tr><td class="h"><a name="351"></a>351</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="352"></a>352</td><td></td><td></td><td></td><td></td><td class="s">outputs something like this:</td></tr>
<tr><td class="h"><a name="353"></a>353</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="354"></a>354</td><td></td><td></td><td></td><td></td><td class="s"> Benchmark: running a, b, each for at least 5 CPU seconds...</td></tr>
<tr><td class="h"><a name="355"></a>355</td><td></td><td></td><td></td><td></td><td class="s"> a: 10 wallclock secs ( 5.14 usr + 0.13 sys = 5.27 CPU) @ 3835055.60/s (n=20210743)</td></tr>
<tr><td class="h"><a name="356"></a>356</td><td></td><td></td><td></td><td></td><td class="s"> b: 5 wallclock secs ( 5.41 usr + 0.00 sys = 5.41 CPU) @ 1574944.92/s (n=8520452)</td></tr>
<tr><td class="h"><a name="357"></a>357</td><td></td><td></td><td></td><td></td><td class="s"> Rate b a</td></tr>
<tr><td class="h"><a name="358"></a>358</td><td></td><td></td><td></td><td></td><td class="s"> b 1574945/s -- -59%</td></tr>
<tr><td class="h"><a name="359"></a>359</td><td></td><td></td><td></td><td></td><td class="s"> a 3835056/s 144% --</td></tr>
<tr><td class="h"><a name="360"></a>360</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="361"></a>361</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="362"></a>362</td><td></td><td></td><td></td><td></td><td class="s">=head1 INHERITANCE</td></tr>
<tr><td class="h"><a name="363"></a>363</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="364"></a>364</td><td></td><td></td><td></td><td></td><td class="s">Benchmark inherits from no other class, except of course</td></tr>
<tr><td class="h"><a name="365"></a>365</td><td></td><td></td><td></td><td></td><td class="s">for Exporter.</td></tr>
<tr><td class="h"><a name="366"></a>366</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="367"></a>367</td><td></td><td></td><td></td><td></td><td class="s">=head1 CAVEATS</td></tr>
<tr><td class="h"><a name="368"></a>368</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="369"></a>369</td><td></td><td></td><td></td><td></td><td class="s">Comparing eval'd strings with code references will give you</td></tr>
<tr><td class="h"><a name="370"></a>370</td><td></td><td></td><td></td><td></td><td class="s">inaccurate results: a code reference will show a slightly slower</td></tr>
<tr><td class="h"><a name="371"></a>371</td><td></td><td></td><td></td><td></td><td class="s">execution time than the equivalent eval'd string.</td></tr>
<tr><td class="h"><a name="372"></a>372</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="373"></a>373</td><td></td><td></td><td></td><td></td><td class="s">The real time timing is done using time(2) and</td></tr>
<tr><td class="h"><a name="374"></a>374</td><td></td><td></td><td></td><td></td><td class="s">the granularity is therefore only one second.</td></tr>
<tr><td class="h"><a name="375"></a>375</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="376"></a>376</td><td></td><td></td><td></td><td></td><td class="s">Short tests may produce negative figures because perl</td></tr>
<tr><td class="h"><a name="377"></a>377</td><td></td><td></td><td></td><td></td><td class="s">can appear to take longer to execute the empty loop</td></tr>
<tr><td class="h"><a name="378"></a>378</td><td></td><td></td><td></td><td></td><td class="s">than a short test; try:</td></tr>
<tr><td class="h"><a name="379"></a>379</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="380"></a>380</td><td></td><td></td><td></td><td></td><td class="s"> timethis(100,'1');</td></tr>
<tr><td class="h"><a name="381"></a>381</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="382"></a>382</td><td></td><td></td><td></td><td></td><td class="s">The system time of the null loop might be slightly</td></tr>
<tr><td class="h"><a name="383"></a>383</td><td></td><td></td><td></td><td></td><td class="s">more than the system time of the loop with the actual</td></tr>
<tr><td class="h"><a name="384"></a>384</td><td></td><td></td><td></td><td></td><td class="s">code and therefore the difference might end up being E<lt> 0.</td></tr>
<tr><td class="h"><a name="385"></a>385</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="386"></a>386</td><td></td><td></td><td></td><td></td><td class="s">=head1 SEE ALSO</td></tr>
<tr><td class="h"><a name="387"></a>387</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="388"></a>388</td><td></td><td></td><td></td><td></td><td class="s">L<Devel::NYTProf> - a Perl code profiler</td></tr>
<tr><td class="h"><a name="389"></a>389</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="390"></a>390</td><td></td><td></td><td></td><td></td><td class="s">=head1 AUTHORS</td></tr>
<tr><td class="h"><a name="391"></a>391</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="392"></a>392</td><td></td><td></td><td></td><td></td><td class="s">Jarkko Hietaniemi <F<jhi@iki.fi>>, Tim Bunce <F<Tim.Bunce@ig.co.uk>></td></tr>
<tr><td class="h"><a name="393"></a>393</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="394"></a>394</td><td></td><td></td><td></td><td></td><td class="s">=head1 MODIFICATION HISTORY</td></tr>
<tr><td class="h"><a name="395"></a>395</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="396"></a>396</td><td></td><td></td><td></td><td></td><td class="s">September 8th, 1994; by Tim Bunce.</td></tr>
<tr><td class="h"><a name="397"></a>397</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="398"></a>398</td><td></td><td></td><td></td><td></td><td class="s">March 28th, 1997; by Hugo van der Sanden: added support for code</td></tr>
<tr><td class="h"><a name="399"></a>399</td><td></td><td></td><td></td><td></td><td class="s">references and the already documented 'debug' method; revamped</td></tr>
<tr><td class="h"><a name="400"></a>400</td><td></td><td></td><td></td><td></td><td class="s">documentation.</td></tr>
<tr><td class="h"><a name="401"></a>401</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="402"></a>402</td><td></td><td></td><td></td><td></td><td class="s">April 04-07th, 1997: by Jarkko Hietaniemi, added the run-for-some-time</td></tr>
<tr><td class="h"><a name="403"></a>403</td><td></td><td></td><td></td><td></td><td class="s">functionality.</td></tr>
<tr><td class="h"><a name="404"></a>404</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="405"></a>405</td><td></td><td></td><td></td><td></td><td class="s">September, 1999; by Barrie Slaymaker: math fixes and accuracy and </td></tr>
<tr><td class="h"><a name="406"></a>406</td><td></td><td></td><td></td><td></td><td class="s">efficiency tweaks. Added cmpthese(). A result is now returned from </td></tr>
<tr><td class="h"><a name="407"></a>407</td><td></td><td></td><td></td><td></td><td class="s">timethese(). Exposed countit() (was runfor()).</td></tr>
<tr><td class="h"><a name="408"></a>408</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="409"></a>409</td><td></td><td></td><td></td><td></td><td class="s">December, 2001; by Nicholas Clark: make timestr() recognise the style 'none'</td></tr>
<tr><td class="h"><a name="410"></a>410</td><td></td><td></td><td></td><td></td><td class="s">and return an empty string. If cmpthese is calling timethese, make it pass the</td></tr>
<tr><td class="h"><a name="411"></a>411</td><td></td><td></td><td></td><td></td><td class="s">style in. (so that 'none' will suppress output). Make sub new dump its</td></tr>
<tr><td class="h"><a name="412"></a>412</td><td></td><td></td><td></td><td></td><td class="s">debugging output to STDERR, to be consistent with everything else.</td></tr>
<tr><td class="h"><a name="413"></a>413</td><td></td><td></td><td></td><td></td><td class="s">All bugs found while writing a regression test.</td></tr>
<tr><td class="h"><a name="414"></a>414</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="415"></a>415</td><td></td><td></td><td></td><td></td><td class="s">September, 2002; by Jarkko Hietaniemi: add ':hireswallclock' special tag.</td></tr>
<tr><td class="h"><a name="416"></a>416</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="417"></a>417</td><td></td><td></td><td></td><td></td><td class="s">February, 2004; by Chia-liang Kao: make cmpthese and timestr use time</td></tr>
<tr><td class="h"><a name="418"></a>418</td><td></td><td></td><td></td><td></td><td class="s">statistics for children instead of parent when the style is 'nop'.</td></tr>
<tr><td class="h"><a name="419"></a>419</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="420"></a>420</td><td></td><td></td><td></td><td></td><td class="s">November, 2007; by Christophe Grosjean: make cmpthese and timestr compute</td></tr>
<tr><td class="h"><a name="421"></a>421</td><td></td><td></td><td></td><td></td><td class="s">time consistently with style argument, default is 'all' not 'noc' any more.</td></tr>
<tr><td class="h"><a name="422"></a>422</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="423"></a>423</td><td></td><td></td><td></td><td></td><td class="s">=cut</td></tr>
<tr><td class="h"><a name="424"></a>424</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="425"></a>425</td><td></td><td></td><td></td><td></td><td class="s"># evaluate something in a clean lexical environment</td></tr>
<tr><td class="h"><a name="426"></a>426</td><td class="c3">2</td><td class="c0"><span title="Avg 14µs">28µs</span></td><td class="c3">2</td><td class="c3">25µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 16µs (6+10) within Benchmark::BEGIN@426 which was called:
# once (6µs+10µs) by main::BEGIN@4 at <a href="Benchmark-pm-27-line.html#426">line 426</a></div></div>sub _doeval { no strict; eval shift }<div class="calls"><div class="calls_out"># spent 16µs making 1 call to <a href="Benchmark-pm-27-line.html#426">Benchmark::BEGIN@426</a>
# spent 10µs making 1 call to <a href="strict-pm-3-line.html#47">strict::unimport</a></div></div></td></tr>
<tr><td class="h"><a name="427"></a>427</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="428"></a>428</td><td></td><td></td><td></td><td></td><td class="s">#</td></tr>
<tr><td class="h"><a name="429"></a>429</td><td></td><td></td><td></td><td></td><td class="s"># put any lexicals at file scope AFTER here</td></tr>
<tr><td class="h"><a name="430"></a>430</td><td></td><td></td><td></td><td></td><td class="s">#</td></tr>
<tr><td class="h"><a name="431"></a>431</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="432"></a>432</td><td class="c3">2</td><td class="c0"><span title="Avg 10µs">20µs</span></td><td class="c3">2</td><td class="c1">70µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 38µs (7+32) within Benchmark::BEGIN@432 which was called:
# once (7µs+32µs) by main::BEGIN@4 at <a href="Benchmark-pm-27-line.html#432">line 432</a></div></div>use Carp;<div class="calls"><div class="calls_out"># spent 38µs making 1 call to <a href="Benchmark-pm-27-line.html#432">Benchmark::BEGIN@432</a>
# spent 32µs making 1 call to <a href="Exporter-pm-9-line.html#28">Exporter::import</a></div></div></td></tr>
<tr><td class="h"><a name="433"></a>433</td><td class="c3">2</td><td class="c0"><span title="Avg 57µs">114µs</span></td><td class="c3">2</td><td class="c3">31µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 19µs (6+12) within Benchmark::BEGIN@433 which was called:
# once (6µs+12µs) by main::BEGIN@4 at <a href="Benchmark-pm-27-line.html#433">line 433</a></div></div>use Exporter;<div class="calls"><div class="calls_out"># spent 19µs making 1 call to <a href="Benchmark-pm-27-line.html#433">Benchmark::BEGIN@433</a>
# spent 12µs making 1 call to <a href="Exporter-pm-9-line.html#28">Exporter::import</a></div></div></td></tr>
<tr><td class="h"><a name="434"></a>434</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="435"></a>435</td><td class="c3">1</td><td class="c3"><span title="Avg 400ns">400ns</span></td><td></td><td></td><td class="s">our(@ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS, $VERSION);</td></tr>
<tr><td class="h"><a name="436"></a>436</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="437"></a>437</td><td class="c3">1</td><td class="c0"><span title="Avg 5µs">5µs</span></td><td></td><td></td><td class="s">@ISA=qw(Exporter);</td></tr>
<tr><td class="h"><a name="438"></a>438</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s">@EXPORT=qw(timeit timethis timethese timediff timestr);</td></tr>
<tr><td class="h"><a name="439"></a>439</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s">@EXPORT_OK=qw(timesum cmpthese countit</td></tr>
<tr><td class="h"><a name="440"></a>440</td><td></td><td></td><td></td><td></td><td class="s"> clearcache clearallcache disablecache enablecache);</td></tr>
<tr><td class="h"><a name="441"></a>441</td><td class="c3">1</td><td class="c0"><span title="Avg 3µs">3µs</span></td><td></td><td></td><td class="s">%EXPORT_TAGS=( all => [ @EXPORT, @EXPORT_OK ] ) ;</td></tr>
<tr><td class="h"><a name="442"></a>442</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="443"></a>443</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$VERSION = 1.15;</td></tr>
<tr><td class="h"><a name="444"></a>444</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="445"></a>445</td><td></td><td></td><td></td><td></td><td class="s"># --- ':hireswallclock' special handling</td></tr>
<tr><td class="h"><a name="446"></a>446</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="447"></a>447</td><td class="c3">1</td><td class="c3"><span title="Avg 0s">0s</span></td><td></td><td></td><td class="s">my $hirestime;</td></tr>
<tr><td class="h"><a name="448"></a>448</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="449"></a>449</td><td class="c0">2930</td><td class="c0"><span title="Avg 1µs">3.75ms</span></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 1.64ms within Benchmark::mytime which was called 2930 times, avg 558ns/call:
# 2930 times (1.64ms+0s) by Benchmark::new at <a href="Benchmark-pm-27-line.html#536">line 536</a>, avg 558ns/call</div></div>sub mytime () { time }</td></tr>
<tr><td class="h"><a name="450"></a>450</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="451"></a>451</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td class="c3">1</td><td class="c3">12µs</td><td class="s">init();<div class="calls"><div class="calls_out"># spent 12µs making 1 call to <a href="Benchmark-pm-27-line.html#473">Benchmark::init</a></div></div></td></tr>
<tr><td class="h"><a name="452"></a>452</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="453"></a>453</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 79µs (21+58) within Benchmark::BEGIN@453 which was called:
# once (21µs+58µs) by main::BEGIN@4 at <a href="Benchmark-pm-27-line.html#458">line 458</a></div></div>sub BEGIN {</td></tr>
<tr><td class="h"><a name="454"></a>454</td><td class="c3">1</td><td class="c0"><span title="Avg 21µs">21µs</span></td><td></td><td></td><td class="s"> if (eval 'require Time::HiRes') {<div class="calls"><div class="calls_out"> # spent 2µs executing statements in <a href="(eval 5)[Benchmark-pm-454]-28-line.html">string eval</a></div></div></td></tr>
<tr><td class="h"><a name="455"></a>455</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td class="c3">1</td><td class="c2">58µs</td><td class="s"> import Time::HiRes qw(time);<div class="calls"><div class="calls_out"> # spent 58µs making 1 call to <a href="Time-HiRes-pm-23-line.html#49">Time::HiRes::import</a></div></div></td></tr>
<tr><td class="h"><a name="456"></a>456</td><td class="c3">1</td><td class="c3"><span title="Avg 400ns">400ns</span></td><td></td><td></td><td class="s"> $hirestime = \&Time::HiRes::time;</td></tr>
<tr><td class="h"><a name="457"></a>457</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="458"></a>458</td><td class="c3">1</td><td class="c0"><span title="Avg 2.48ms">2.48ms</span></td><td class="c3">1</td><td class="c1">79µs</td><td class="s">}<div class="calls"><div class="calls_out"># spent 79µs making 1 call to <a href="Benchmark-pm-27-line.html#453">Benchmark::BEGIN@453</a></div></div></td></tr>
<tr><td class="h"><a name="459"></a>459</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="460"></a>460</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 91µs (9+81) within Benchmark::import which was called:
# once (9µs+81µs) by main::BEGIN@4 at <a href="examples-Atom-timer-pl-1-line.html#4">line 4 of examples/Atom-timer.pl</a></div></div>sub import {</td></tr>
<tr><td class="h"><a name="461"></a>461</td><td class="c3">1</td><td class="c3"><span title="Avg 300ns">300ns</span></td><td></td><td></td><td class="s"> my $class = shift;</td></tr>
<tr><td class="h"><a name="462"></a>462</td><td class="c3">1</td><td class="c3"><span title="Avg 900ns">900ns</span></td><td></td><td></td><td class="s"> if (grep { $_ eq ":hireswallclock" } @_) {</td></tr>
<tr><td class="h"><a name="463"></a>463</td><td></td><td></td><td></td><td></td><td class="s"> @_ = grep { $_ ne ":hireswallclock" } @_;</td></tr>
<tr><td class="h"><a name="464"></a>464</td><td></td><td></td><td></td><td></td><td class="s"> local $^W=0;</td></tr>
<tr><td class="h"><a name="465"></a>465</td><td></td><td></td><td></td><td></td><td class="s"> *mytime = $hirestime if defined $hirestime;</td></tr>
<tr><td class="h"><a name="466"></a>466</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="467"></a>467</td><td class="c3">1</td><td class="c0"><span title="Avg 5µs">5µs</span></td><td class="c3">1</td><td class="c3">11µs</td><td class="s"> Benchmark->export_to_level(1, $class, @_);<div class="calls"><div class="calls_out"> # spent 11µs making 1 call to <a href="Exporter-pm-9-line.html#80">Exporter::export_to_level</a></div></div></td></tr>
<tr><td class="h"><a name="468"></a>468</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="469"></a>469</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="470"></a>470</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">our($Debug, $Min_Count, $Min_CPU, $Default_Format, $Default_Style,</td></tr>
<tr><td class="h"><a name="471"></a>471</td><td></td><td></td><td></td><td></td><td class="s"> %_Usage, %Cache, $Do_Cache);</td></tr>
<tr><td class="h"><a name="472"></a>472</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="473"></a>473</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 12µs (10+2) within Benchmark::init which was called:
# once (10µs+2µs) by main::BEGIN@4 at <a href="Benchmark-pm-27-line.html#451">line 451</a></div></div>sub init {</td></tr>
<tr><td class="h"><a name="474"></a>474</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s"> $Debug = 0;</td></tr>
<tr><td class="h"><a name="475"></a>475</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s"> $Min_Count = 4;</td></tr>
<tr><td class="h"><a name="476"></a>476</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s"> $Min_CPU = 0.4;</td></tr>
<tr><td class="h"><a name="477"></a>477</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s"> $Default_Format = '5.2f';</td></tr>
<tr><td class="h"><a name="478"></a>478</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s"> $Default_Style = 'auto';</td></tr>
<tr><td class="h"><a name="479"></a>479</td><td></td><td></td><td></td><td></td><td class="s"> # The cache can cause a slight loss of sys time accuracy. If a</td></tr>
<tr><td class="h"><a name="480"></a>480</td><td></td><td></td><td></td><td></td><td class="s"> # user does many tests (>10) with *very* large counts (>10000)</td></tr>
<tr><td class="h"><a name="481"></a>481</td><td></td><td></td><td></td><td></td><td class="s"> # or works on a very slow machine the cache may be useful.</td></tr>
<tr><td class="h"><a name="482"></a>482</td><td class="c3">1</td><td class="c3"><span title="Avg 500ns">500ns</span></td><td class="c3">1</td><td class="c3">800ns</td><td class="s"> disablecache();<div class="calls"><div class="calls_out"> # spent 800ns making 1 call to <a href="Benchmark-pm-27-line.html#528">Benchmark::disablecache</a></div></div></td></tr>
<tr><td class="h"><a name="483"></a>483</td><td class="c3">1</td><td class="c0"><span title="Avg 3µs">3µs</span></td><td class="c3">1</td><td class="c3">1µs</td><td class="s"> clearallcache();<div class="calls"><div class="calls_out"> # spent 1µs making 1 call to <a href="Benchmark-pm-27-line.html#510">Benchmark::clearallcache</a></div></div></td></tr>
<tr><td class="h"><a name="484"></a>484</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="485"></a>485</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="486"></a>486</td><td></td><td></td><td></td><td></td><td class="s">sub debug { $Debug = ($_[1] != 0); }</td></tr>
<tr><td class="h"><a name="487"></a>487</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="488"></a>488</td><td></td><td></td><td></td><td></td><td class="s">sub usage { </td></tr>
<tr><td class="h"><a name="489"></a>489</td><td></td><td></td><td></td><td></td><td class="s"> my $calling_sub = (caller(1))[3];</td></tr>
<tr><td class="h"><a name="490"></a>490</td><td></td><td></td><td></td><td></td><td class="s"> $calling_sub =~ s/^Benchmark:://;</td></tr>
<tr><td class="h"><a name="491"></a>491</td><td></td><td></td><td></td><td></td><td class="s"> return $_Usage{$calling_sub} || '';</td></tr>
<tr><td class="h"><a name="492"></a>492</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="493"></a>493</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="494"></a>494</td><td></td><td></td><td></td><td></td><td class="s"># The cache needs two branches: 's' for strings and 'c' for code. The</td></tr>
<tr><td class="h"><a name="495"></a>495</td><td></td><td></td><td></td><td></td><td class="s"># empty loop is different in these two cases.</td></tr>
<tr><td class="h"><a name="496"></a>496</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="497"></a>497</td><td class="c3">1</td><td class="c3"><span title="Avg 600ns">600ns</span></td><td></td><td></td><td class="s">$_Usage{clearcache} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="498"></a>498</td><td></td><td></td><td></td><td></td><td class="s">usage: clearcache($count);</td></tr>
<tr><td class="h"><a name="499"></a>499</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="500"></a>500</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="501"></a>501</td><td></td><td></td><td></td><td></td><td class="s">sub clearcache { </td></tr>
<tr><td class="h"><a name="502"></a>502</td><td></td><td></td><td></td><td></td><td class="s"> die usage unless @_ == 1;</td></tr>
<tr><td class="h"><a name="503"></a>503</td><td></td><td></td><td></td><td></td><td class="s"> delete $Cache{"$_[0]c"}; delete $Cache{"$_[0]s"}; </td></tr>
<tr><td class="h"><a name="504"></a>504</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="505"></a>505</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="506"></a>506</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{clearallcache} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="507"></a>507</td><td></td><td></td><td></td><td></td><td class="s">usage: clearallcache();</td></tr>
<tr><td class="h"><a name="508"></a>508</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="509"></a>509</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="510"></a>510</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 1µs within Benchmark::clearallcache which was called:
# once (1µs+0s) by Benchmark::init at <a href="Benchmark-pm-27-line.html#483">line 483</a></div></div>sub clearallcache { </td></tr>
<tr><td class="h"><a name="511"></a>511</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s"> die usage if @_;</td></tr>
<tr><td class="h"><a name="512"></a>512</td><td class="c3">1</td><td class="c0"><span title="Avg 3µs">3µs</span></td><td></td><td></td><td class="s"> %Cache = (); </td></tr>
<tr><td class="h"><a name="513"></a>513</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="514"></a>514</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="515"></a>515</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{enablecache} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="516"></a>516</td><td></td><td></td><td></td><td></td><td class="s">usage: enablecache();</td></tr>
<tr><td class="h"><a name="517"></a>517</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="518"></a>518</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="519"></a>519</td><td></td><td></td><td></td><td></td><td class="s">sub enablecache {</td></tr>
<tr><td class="h"><a name="520"></a>520</td><td></td><td></td><td></td><td></td><td class="s"> die usage if @_;</td></tr>
<tr><td class="h"><a name="521"></a>521</td><td></td><td></td><td></td><td></td><td class="s"> $Do_Cache = 1; </td></tr>
<tr><td class="h"><a name="522"></a>522</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="523"></a>523</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="524"></a>524</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{disablecache} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="525"></a>525</td><td></td><td></td><td></td><td></td><td class="s">usage: disablecache();</td></tr>
<tr><td class="h"><a name="526"></a>526</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="527"></a>527</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="528"></a>528</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 800ns within Benchmark::disablecache which was called:
# once (800ns+0s) by Benchmark::init at <a href="Benchmark-pm-27-line.html#482">line 482</a></div></div>sub disablecache {</td></tr>
<tr><td class="h"><a name="529"></a>529</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s"> die usage if @_;</td></tr>
<tr><td class="h"><a name="530"></a>530</td><td class="c3">1</td><td class="c0"><span title="Avg 4µs">4µs</span></td><td></td><td></td><td class="s"> $Do_Cache = 0; </td></tr>
<tr><td class="h"><a name="531"></a>531</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="532"></a>532</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="533"></a>533</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="534"></a>534</td><td></td><td></td><td></td><td></td><td class="s"># --- Functions to process the 'time' data type</td></tr>
<tr><td class="h"><a name="535"></a>535</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="536"></a>536</td><td class="c0">2930</td><td class="c0"><span title="Avg 2µs">4.92ms</span></td><td class="c0">2930</td><td class="c0">1.64ms</td><td class="s"><div class="calls"><div class="calls_in"># spent 12.3ms (10.7+1.64) within Benchmark::new which was called 2930 times, avg 4µs/call:
# 2922 times (10.6ms+1.62ms) by Benchmark::runloop at <a href="Benchmark-pm-27-line.html#662">line 662</a>, avg 4µs/call
# 4 times (33µs+9µs) by Benchmark::runloop at <a href="Benchmark-pm-27-line.html#661">line 661</a>, avg 10µs/call
# 4 times (34µs+7µs) by Benchmark::runloop at <a href="Benchmark-pm-27-line.html#664">line 664</a>, avg 10µs/call</div></div>sub new { my @t = (mytime, times, @_ == 2 ? $_[1] : 0);<div class="calls"><div class="calls_out"># spent 1.64ms making 2930 calls to <a href="Benchmark-pm-27-line.html#449">Benchmark::mytime</a>, avg 558ns/call</div></div></td></tr>
<tr><td class="h"><a name="537"></a>537</td><td class="c0">2930</td><td class="c3"><span title="Avg 0ns">1µs</span></td><td></td><td></td><td class="s"> print STDERR "new=@t\n" if $Debug;</td></tr>
<tr><td class="h"><a name="538"></a>538</td><td class="c0">2930</td><td class="c0"><span title="Avg 1µs">3.29ms</span></td><td></td><td></td><td class="s"> bless \@t; }</td></tr>
<tr><td class="h"><a name="539"></a>539</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="540"></a>540</td><td></td><td></td><td></td><td></td><td class="s">sub cpu_p { my($r,$pu,$ps,$cu,$cs) = @{$_[0]}; $pu+$ps ; }</td></tr>
<tr><td class="h"><a name="541"></a>541</td><td></td><td></td><td></td><td></td><td class="s">sub cpu_c { my($r,$pu,$ps,$cu,$cs) = @{$_[0]}; $cu+$cs ; }</td></tr>
<tr><td class="h"><a name="542"></a>542</td><td class="c0">4</td><td class="c0"><span title="Avg 2µs">7µs</span></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 6µs within Benchmark::cpu_a which was called 2 times, avg 3µs/call:
# 2 times (6µs+0s) by Benchmark::timethis at <a href="Benchmark-pm-27-line.html#839">line 839</a>, avg 3µs/call</div></div>sub cpu_a { my($r,$pu,$ps,$cu,$cs) = @{$_[0]}; $pu+$ps+$cu+$cs ; }</td></tr>
<tr><td class="h"><a name="543"></a>543</td><td class="c0">4</td><td class="c0"><span title="Avg 1µs">6µs</span></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 4µs within Benchmark::real which was called 2 times, avg 2µs/call:
# 2 times (4µs+0s) by Benchmark::timethis at <a href="Benchmark-pm-27-line.html#839">line 839</a>, avg 2µs/call</div></div>sub real { my($r,$pu,$ps,$cu,$cs) = @{$_[0]}; $r ; }</td></tr>
<tr><td class="h"><a name="544"></a>544</td><td></td><td></td><td></td><td></td><td class="s">sub iters { $_[0]->[5] ; }</td></tr>
<tr><td class="h"><a name="545"></a>545</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="546"></a>546</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="547"></a>547</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{timediff} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="548"></a>548</td><td></td><td></td><td></td><td></td><td class="s">usage: $result_diff = timediff($result1, $result2);</td></tr>
<tr><td class="h"><a name="549"></a>549</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="550"></a>550</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="551"></a>551</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 45µs within Benchmark::timediff which was called 6 times, avg 8µs/call:
# 4 times (35µs+0s) by Benchmark::runloop at <a href="Benchmark-pm-27-line.html#665">line 665</a>, avg 9µs/call
# 2 times (10µs+0s) by Benchmark::timeit at <a href="Benchmark-pm-27-line.html#696">line 696</a>, avg 5µs/call</div></div>sub timediff {</td></tr>
<tr><td class="h"><a name="552"></a>552</td><td class="c0">6</td><td class="c1"><span title="Avg 333ns">2µs</span></td><td></td><td></td><td class="s"> my($a, $b) = @_;</td></tr>
<tr><td class="h"><a name="553"></a>553</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="554"></a>554</td><td class="c0">6</td><td class="c0"><span title="Avg 550ns">3µs</span></td><td></td><td></td><td class="s"> die usage unless ref $a and ref $b;</td></tr>
<tr><td class="h"><a name="555"></a>555</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="556"></a>556</td><td class="c0">6</td><td class="c3"><span title="Avg 133ns">800ns</span></td><td></td><td></td><td class="s"> my @r;</td></tr>
<tr><td class="h"><a name="557"></a>557</td><td class="c0">6</td><td class="c0"><span title="Avg 4µs">23µs</span></td><td></td><td></td><td class="s"> for (my $i=0; $i < @$a; ++$i) {</td></tr>
<tr><td class="h"><a name="558"></a>558</td><td></td><td></td><td></td><td></td><td class="s"> push(@r, $a->[$i] - $b->[$i]);</td></tr>
<tr><td class="h"><a name="559"></a>559</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="560"></a>560</td><td></td><td></td><td></td><td></td><td class="s"> #die "Bad timediff(): ($r[1] + $r[2]) <= 0 (@$a[1,2]|@$b[1,2])\n"</td></tr>
<tr><td class="h"><a name="561"></a>561</td><td></td><td></td><td></td><td></td><td class="s"> # if ($r[1] + $r[2]) < 0;</td></tr>
<tr><td class="h"><a name="562"></a>562</td><td class="c0">6</td><td class="c0"><span title="Avg 2µs">13µs</span></td><td></td><td></td><td class="s"> bless \@r;</td></tr>
<tr><td class="h"><a name="563"></a>563</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="564"></a>564</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="565"></a>565</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{timesum} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="566"></a>566</td><td></td><td></td><td></td><td></td><td class="s">usage: $sum = timesum($result1, $result2);</td></tr>
<tr><td class="h"><a name="567"></a>567</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="568"></a>568</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="569"></a>569</td><td></td><td></td><td></td><td></td><td class="s">sub timesum {</td></tr>
<tr><td class="h"><a name="570"></a>570</td><td></td><td></td><td></td><td></td><td class="s"> my($a, $b) = @_;</td></tr>
<tr><td class="h"><a name="571"></a>571</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="572"></a>572</td><td></td><td></td><td></td><td></td><td class="s"> die usage unless ref $a and ref $b;</td></tr>
<tr><td class="h"><a name="573"></a>573</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="574"></a>574</td><td></td><td></td><td></td><td></td><td class="s"> my @r;</td></tr>
<tr><td class="h"><a name="575"></a>575</td><td></td><td></td><td></td><td></td><td class="s"> for (my $i=0; $i < @$a; ++$i) {</td></tr>
<tr><td class="h"><a name="576"></a>576</td><td></td><td></td><td></td><td></td><td class="s"> push(@r, $a->[$i] + $b->[$i]);</td></tr>
<tr><td class="h"><a name="577"></a>577</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="578"></a>578</td><td></td><td></td><td></td><td></td><td class="s"> bless \@r;</td></tr>
<tr><td class="h"><a name="579"></a>579</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="580"></a>580</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="581"></a>581</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="582"></a>582</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{timestr} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="583"></a>583</td><td></td><td></td><td></td><td></td><td class="s">usage: $formatted_result = timestr($result1);</td></tr>
<tr><td class="h"><a name="584"></a>584</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="585"></a>585</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="586"></a>586</td><td></td><td></td><td></td><td></td><td class="s">sub timestr {</td></tr>
<tr><td class="h"><a name="587"></a>587</td><td></td><td></td><td></td><td></td><td class="s"> my($tr, $style, $f) = @_;</td></tr>
<tr><td class="h"><a name="588"></a>588</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="589"></a>589</td><td></td><td></td><td></td><td></td><td class="s"> die usage unless ref $tr;</td></tr>
<tr><td class="h"><a name="590"></a>590</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="591"></a>591</td><td></td><td></td><td></td><td></td><td class="s"> my @t = @$tr;</td></tr>
<tr><td class="h"><a name="592"></a>592</td><td></td><td></td><td></td><td></td><td class="s"> warn "bad time value (@t)" unless @t==6;</td></tr>
<tr><td class="h"><a name="593"></a>593</td><td></td><td></td><td></td><td></td><td class="s"> my($r, $pu, $ps, $cu, $cs, $n) = @t;</td></tr>
<tr><td class="h"><a name="594"></a>594</td><td></td><td></td><td></td><td></td><td class="s"> my($pt, $ct, $tt) = ($tr->cpu_p, $tr->cpu_c, $tr->cpu_a);</td></tr>
<tr><td class="h"><a name="595"></a>595</td><td></td><td></td><td></td><td></td><td class="s"> $f = $Default_Format unless defined $f;</td></tr>
<tr><td class="h"><a name="596"></a>596</td><td></td><td></td><td></td><td></td><td class="s"> # format a time in the required style, other formats may be added here</td></tr>
<tr><td class="h"><a name="597"></a>597</td><td></td><td></td><td></td><td></td><td class="s"> $style ||= $Default_Style;</td></tr>
<tr><td class="h"><a name="598"></a>598</td><td></td><td></td><td></td><td></td><td class="s"> return '' if $style eq 'none';</td></tr>
<tr><td class="h"><a name="599"></a>599</td><td></td><td></td><td></td><td></td><td class="s"> $style = ($ct>0) ? 'all' : 'noc' if $style eq 'auto';</td></tr>
<tr><td class="h"><a name="600"></a>600</td><td></td><td></td><td></td><td></td><td class="s"> my $s = "@t $style"; # default for unknown style</td></tr>
<tr><td class="h"><a name="601"></a>601</td><td></td><td></td><td></td><td></td><td class="s"> my $w = $hirestime ? "%2g" : "%2d";</td></tr>
<tr><td class="h"><a name="602"></a>602</td><td></td><td></td><td></td><td></td><td class="s"> $s = sprintf("$w wallclock secs (%$f usr %$f sys + %$f cusr %$f csys = %$f CPU)",</td></tr>
<tr><td class="h"><a name="603"></a>603</td><td></td><td></td><td></td><td></td><td class="s"> $r,$pu,$ps,$cu,$cs,$tt) if $style eq 'all';</td></tr>
<tr><td class="h"><a name="604"></a>604</td><td></td><td></td><td></td><td></td><td class="s"> $s = sprintf("$w wallclock secs (%$f usr + %$f sys = %$f CPU)",</td></tr>
<tr><td class="h"><a name="605"></a>605</td><td></td><td></td><td></td><td></td><td class="s"> $r,$pu,$ps,$pt) if $style eq 'noc';</td></tr>
<tr><td class="h"><a name="606"></a>606</td><td></td><td></td><td></td><td></td><td class="s"> $s = sprintf("$w wallclock secs (%$f cusr + %$f csys = %$f CPU)",</td></tr>
<tr><td class="h"><a name="607"></a>607</td><td></td><td></td><td></td><td></td><td class="s"> $r,$cu,$cs,$ct) if $style eq 'nop';</td></tr>
<tr><td class="h"><a name="608"></a>608</td><td></td><td></td><td></td><td></td><td class="s"> my $elapsed = do {</td></tr>
<tr><td class="h"><a name="609"></a>609</td><td></td><td></td><td></td><td></td><td class="s"> if ($style eq 'nop') {$cu+$cs}</td></tr>
<tr><td class="h"><a name="610"></a>610</td><td></td><td></td><td></td><td></td><td class="s"> elsif ($style eq 'noc') {$pu+$ps}</td></tr>
<tr><td class="h"><a name="611"></a>611</td><td></td><td></td><td></td><td></td><td class="s"> else {$cu+$cs+$pu+$ps}</td></tr>
<tr><td class="h"><a name="612"></a>612</td><td></td><td></td><td></td><td></td><td class="s"> };</td></tr>
<tr><td class="h"><a name="613"></a>613</td><td></td><td></td><td></td><td></td><td class="s"> $s .= sprintf(" @ %$f/s (n=$n)",$n/($elapsed)) if $n && $elapsed;</td></tr>
<tr><td class="h"><a name="614"></a>614</td><td></td><td></td><td></td><td></td><td class="s"> $s;</td></tr>
<tr><td class="h"><a name="615"></a>615</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="616"></a>616</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="617"></a>617</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 12µs within Benchmark::timedebug which was called 10 times, avg 1µs/call:
# 4 times (7µs+0s) by Benchmark::runloop at <a href="Benchmark-pm-27-line.html#666">line 666</a>, avg 2µs/call
# 2 times (2µs+0s) by Benchmark::timeit at <a href="Benchmark-pm-27-line.html#697">line 697</a>, avg 950ns/call
# 2 times (2µs+0s) by Benchmark::timeit at <a href="Benchmark-pm-27-line.html#698">line 698</a>, avg 850ns/call
# 2 times (2µs+0s) by Benchmark::timeit at <a href="Benchmark-pm-27-line.html#699">line 699</a>, avg 750ns/call</div></div>sub timedebug {</td></tr>
<tr><td class="h"><a name="618"></a>618</td><td class="c0">10</td><td class="c1"><span title="Avg 250ns">2µs</span></td><td></td><td></td><td class="s"> my($msg, $t) = @_;</td></tr>
<tr><td class="h"><a name="619"></a>619</td><td class="c0">10</td><td class="c0"><span title="Avg 2µs">17µs</span></td><td></td><td></td><td class="s"> print STDERR "$msg",timestr($t),"\n" if $Debug;</td></tr>
<tr><td class="h"><a name="620"></a>620</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="621"></a>621</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="622"></a>622</td><td></td><td></td><td></td><td></td><td class="s"># --- Functions implementing low-level support for timing loops</td></tr>
<tr><td class="h"><a name="623"></a>623</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="624"></a>624</td><td class="c3">1</td><td class="c3"><span title="Avg 700ns">700ns</span></td><td></td><td></td><td class="s">$_Usage{runloop} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="625"></a>625</td><td></td><td></td><td></td><td></td><td class="s">usage: runloop($number, [$string | $coderef])</td></tr>
<tr><td class="h"><a name="626"></a>626</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="627"></a>627</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="628"></a>628</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 6.68s (6.01ms+6.67) within Benchmark::runloop which was called 4 times, avg 1.67s/call:
# 2 times (2.97ms+6.39s) by Benchmark::timeit at <a href="Benchmark-pm-27-line.html#694">line 694</a>, avg 3.19s/call
# 2 times (3.04ms+289ms) by Benchmark::timeit at <a href="Benchmark-pm-27-line.html#687">line 687</a>, avg 146ms/call</div></div>sub runloop {</td></tr>
<tr><td class="h"><a name="629"></a>629</td><td class="c0">4</td><td class="c2"><span title="Avg 350ns">1µs</span></td><td></td><td></td><td class="s"> my($n, $c) = @_;</td></tr>
<tr><td class="h"><a name="630"></a>630</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="631"></a>631</td><td class="c0">4</td><td class="c3"><span title="Avg 250ns">1µs</span></td><td></td><td></td><td class="s"> $n+=0; # force numeric now, so garbage won't creep into the eval</td></tr>
<tr><td class="h"><a name="632"></a>632</td><td class="c0">4</td><td class="c3"><span title="Avg 200ns">800ns</span></td><td></td><td></td><td class="s"> croak "negative loopcount $n" if $n<0;</td></tr>
<tr><td class="h"><a name="633"></a>633</td><td class="c0">4</td><td class="c3"><span title="Avg 150ns">600ns</span></td><td></td><td></td><td class="s"> confess usage unless defined $c;</td></tr>
<tr><td class="h"><a name="634"></a>634</td><td class="c0">4</td><td class="c3"><span title="Avg 200ns">800ns</span></td><td></td><td></td><td class="s"> my($t0, $t1, $td); # before, after, difference</td></tr>
<tr><td class="h"><a name="635"></a>635</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="636"></a>636</td><td></td><td></td><td></td><td></td><td class="s"> # find package of caller so we can execute code there</td></tr>
<tr><td class="h"><a name="637"></a>637</td><td class="c0">4</td><td class="c0"><span title="Avg 3µs">10µs</span></td><td></td><td></td><td class="s"> my($curpack) = caller(0);</td></tr>
<tr><td class="h"><a name="638"></a>638</td><td class="c0">4</td><td class="c3"><span title="Avg 275ns">1µs</span></td><td></td><td></td><td class="s"> my($i, $pack)= 0;</td></tr>
<tr><td class="h"><a name="639"></a>639</td><td class="c0">4</td><td class="c0"><span title="Avg 3µs">11µs</span></td><td></td><td></td><td class="s"> while (($pack) = caller(++$i)) {</td></tr>
<tr><td class="h"><a name="640"></a>640</td><td class="c0">16</td><td class="c0"><span title="Avg 4µs">58µs</span></td><td></td><td></td><td class="s"> last if $pack ne $curpack;</td></tr>
<tr><td class="h"><a name="641"></a>641</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="642"></a>642</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="643"></a>643</td><td class="c0">4</td><td class="c3"><span title="Avg 100ns">400ns</span></td><td></td><td></td><td class="s"> my ($subcode, $subref);</td></tr>
<tr><td class="h"><a name="644"></a>644</td><td class="c0">4</td><td class="c0"><span title="Avg 700ns">3µs</span></td><td></td><td></td><td class="s"> if (ref $c eq 'CODE') {</td></tr>
<tr><td class="h"><a name="645"></a>645</td><td class="c0">4</td><td class="c0"><span title="Avg 1µs">4µs</span></td><td></td><td></td><td class="s"> $subcode = "sub { for (1 .. $n) { local \$_; package $pack; &\$c; } }";</td></tr>
<tr><td class="h"><a name="646"></a>646</td><td class="c0">4</td><td class="c0"><span title="Avg 59µs">237µs</span></td><td></td><td></td><td class="s"> $subref = eval $subcode;<div class="calls"><div class="calls_out"> # spent 304ms executing statements in <a href="(eval 333)[Benchmark-pm-646]-474-line.html">4 string evals (merged)</a><br /> # includes 759ms spent executing 4 calls to 1 sub defined therein.</div></div></td></tr>
<tr><td class="h"><a name="647"></a>647</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="648"></a>648</td><td></td><td></td><td></td><td></td><td class="s"> else {</td></tr>
<tr><td class="h"><a name="649"></a>649</td><td></td><td></td><td></td><td></td><td class="s"> $subcode = "sub { for (1 .. $n) { local \$_; package $pack; $c;} }";</td></tr>
<tr><td class="h"><a name="650"></a>650</td><td></td><td></td><td></td><td></td><td class="s"> $subref = _doeval($subcode);</td></tr>
<tr><td class="h"><a name="651"></a>651</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="652"></a>652</td><td class="c0">4</td><td class="c3"><span title="Avg 175ns">700ns</span></td><td></td><td></td><td class="s"> croak "runloop unable to compile '$c': $@\ncode: $subcode\n" if $@;</td></tr>
<tr><td class="h"><a name="653"></a>653</td><td class="c0">4</td><td class="c3"><span title="Avg 100ns">400ns</span></td><td></td><td></td><td class="s"> print STDERR "runloop $n '$subcode'\n" if $Debug;</td></tr>
<tr><td class="h"><a name="654"></a>654</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="655"></a>655</td><td></td><td></td><td></td><td></td><td class="s"> # Wait for the user timer to tick. This makes the error range more like </td></tr>
<tr><td class="h"><a name="656"></a>656</td><td></td><td></td><td></td><td></td><td class="s"> # -0.01, +0. If we don't wait, then it's more like -0.01, +0.01. This</td></tr>
<tr><td class="h"><a name="657"></a>657</td><td></td><td></td><td></td><td></td><td class="s"> # may not seem important, but it significantly reduces the chances of</td></tr>
<tr><td class="h"><a name="658"></a>658</td><td></td><td></td><td></td><td></td><td class="s"> # getting a too low initial $n in the initial, 'find the minimum' loop</td></tr>
<tr><td class="h"><a name="659"></a>659</td><td></td><td></td><td></td><td></td><td class="s"> # in &countit. This, in turn, can reduce the number of calls to</td></tr>
<tr><td class="h"><a name="660"></a>660</td><td></td><td></td><td></td><td></td><td class="s"> # &runloop a lot, and thus reduce additive errors.</td></tr>
<tr><td class="h"><a name="661"></a>661</td><td class="c0">4</td><td class="c0"><span title="Avg 4µs">17µs</span></td><td class="c0">4</td><td class="c3">41µs</td><td class="s"> my $tbase = Benchmark->new(0)->[1];<div class="calls"><div class="calls_out"> # spent 41µs making 4 calls to <a href="Benchmark-pm-27-line.html#536">Benchmark::new</a>, avg 10µs/call</div></div></td></tr>
<tr><td class="h"><a name="662"></a>662</td><td class="c0">4</td><td class="c0"><span title="Avg 858µs">3.43ms</span></td><td class="c0">2922</td><td class="c0">12.2ms</td><td class="s"> while ( ( $t0 = Benchmark->new(0) )->[1] == $tbase ) {} ;<div class="calls"><div class="calls_out"> # spent 12.2ms making 2922 calls to <a href="Benchmark-pm-27-line.html#536">Benchmark::new</a>, avg 4µs/call</div></div></td></tr>
<tr><td class="h"><a name="663"></a>663</td><td class="c0">4</td><td class="c0"><span title="Avg 1µs">4µs</span></td><td class="c0">4</td><td class="c0">6.66s</td><td class="s"> $subref->();<div class="calls"><div class="calls_out"> # spent 6.66s making 4 calls to <a href="(eval 333)[Benchmark-pm-646]-474-line.html#1">Benchmark::__ANON__[(eval 333)[Benchmark.pm:646]:1]</a>, avg 1.67s/call</div></div></td></tr>
<tr><td class="h"><a name="664"></a>664</td><td class="c0">4</td><td class="c0"><span title="Avg 3µs">11µs</span></td><td class="c0">4</td><td class="c3">40µs</td><td class="s"> $t1 = Benchmark->new($n);<div class="calls"><div class="calls_out"> # spent 40µs making 4 calls to <a href="Benchmark-pm-27-line.html#536">Benchmark::new</a>, avg 10µs/call</div></div></td></tr>
<tr><td class="h"><a name="665"></a>665</td><td class="c0">4</td><td class="c0"><span title="Avg 1µs">6µs</span></td><td class="c0">4</td><td class="c3">35µs</td><td class="s"> $td = &timediff($t1, $t0);<div class="calls"><div class="calls_out"> # spent 35µs making 4 calls to <a href="Benchmark-pm-27-line.html#551">Benchmark::timediff</a>, avg 9µs/call</div></div></td></tr>
<tr><td class="h"><a name="666"></a>666</td><td class="c0">4</td><td class="c0"><span title="Avg 1µs">5µs</span></td><td class="c0">4</td><td class="c3">7µs</td><td class="s"> timedebug("runloop:",$td);<div class="calls"><div class="calls_out"> # spent 7µs making 4 calls to <a href="Benchmark-pm-27-line.html#617">Benchmark::timedebug</a>, avg 2µs/call</div></div></td></tr>
<tr><td class="h"><a name="667"></a>667</td><td class="c0">4</td><td class="c0"><span title="Avg 11µs">44µs</span></td><td></td><td></td><td class="s"> $td;</td></tr>
<tr><td class="h"><a name="668"></a>668</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="669"></a>669</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="670"></a>670</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{timeit} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="671"></a>671</td><td></td><td></td><td></td><td></td><td class="s">usage: $result = timeit($count, 'code' ); or</td></tr>
<tr><td class="h"><a name="672"></a>672</td><td></td><td></td><td></td><td></td><td class="s"> $result = timeit($count, sub { code } );</td></tr>
<tr><td class="h"><a name="673"></a>673</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="674"></a>674</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="675"></a>675</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 6.68s (52µs+6.68) within Benchmark::timeit which was called 2 times, avg 3.34s/call:
# 2 times (52µs+6.68s) by Benchmark::timethis at <a href="Benchmark-pm-27-line.html#821">line 821</a>, avg 3.34s/call</div></div>sub timeit {</td></tr>
<tr><td class="h"><a name="676"></a>676</td><td class="c3">2</td><td class="c3"><span title="Avg 350ns">700ns</span></td><td></td><td></td><td class="s"> my($n, $code) = @_;</td></tr>
<tr><td class="h"><a name="677"></a>677</td><td class="c3">2</td><td class="c3"><span title="Avg 300ns">600ns</span></td><td></td><td></td><td class="s"> my($wn, $wc, $wd);</td></tr>
<tr><td class="h"><a name="678"></a>678</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="679"></a>679</td><td class="c3">2</td><td class="c2"><span title="Avg 700ns">1µs</span></td><td></td><td></td><td class="s"> die usage unless defined $code and</td></tr>
<tr><td class="h"><a name="680"></a>680</td><td></td><td></td><td></td><td></td><td class="s"> (!ref $code or ref $code eq 'CODE');</td></tr>
<tr><td class="h"><a name="681"></a>681</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="682"></a>682</td><td class="c3">2</td><td class="c3"><span title="Avg 350ns">700ns</span></td><td></td><td></td><td class="s"> printf STDERR "timeit $n $code\n" if $Debug;</td></tr>
<tr><td class="h"><a name="683"></a>683</td><td class="c3">2</td><td class="c1"><span title="Avg 1µs">2µs</span></td><td></td><td></td><td class="s"> my $cache_key = $n . ( ref( $code ) ? 'c' : 's' );</td></tr>
<tr><td class="h"><a name="684"></a>684</td><td class="c3">2</td><td class="c3"><span title="Avg 550ns">1µs</span></td><td></td><td></td><td class="s"> if ($Do_Cache && exists $Cache{$cache_key} ) {</td></tr>
<tr><td class="h"><a name="685"></a>685</td><td></td><td></td><td></td><td></td><td class="s"> $wn = $Cache{$cache_key};</td></tr>
<tr><td class="h"><a name="686"></a>686</td><td></td><td></td><td></td><td></td><td class="s"> } else {</td></tr>
<tr><td class="h"><a name="687"></a>687</td><td class="c0">100002</td><td class="c0"><span title="Avg 2µs">175ms</span></td><td class="c3">2</td><td class="c0">292ms</td><td class="s"><div class="calls"><div class="calls_in"># spent 40.3ms within Benchmark::__ANON__[/Users/dde/perl5/perlbrew/perls/5.18.0t/lib/5.18.0/Benchmark.pm:687] which was called 100000 times, avg 403ns/call:
# 100000 times (40.3ms+0s) by Benchmark::__ANON__[(eval 333)[/Users/dde/perl5/perlbrew/perls/5.18.0t/lib/5.18.0/Benchmark.pm:646]:1] or Benchmark::__ANON__[(eval 335)[/Users/dde/perl5/perlbrew/perls/5.18.0t/lib/5.18.0/Benchmark.pm:646]:1] at <a href="(eval 333)[Benchmark-pm-646]-474-line.html#1">line 1 of (eval 333)[Benchmark.pm:646]</a>, avg 403ns/call</div></div> $wn = &runloop($n, ref( $code ) ? sub { } : '' );<div class="calls"><div class="calls_out"> # spent 292ms making 2 calls to <a href="Benchmark-pm-27-line.html#628">Benchmark::runloop</a>, avg 146ms/call</div></div></td></tr>
<tr><td class="h"><a name="688"></a>688</td><td></td><td></td><td></td><td></td><td class="s"> # Can't let our baseline have any iterations, or they get subtracted</td></tr>
<tr><td class="h"><a name="689"></a>689</td><td></td><td></td><td></td><td></td><td class="s"> # out of the result.</td></tr>
<tr><td class="h"><a name="690"></a>690</td><td class="c3">2</td><td class="c3"><span title="Avg 550ns">1µs</span></td><td></td><td></td><td class="s"> $wn->[5] = 0;</td></tr>
<tr><td class="h"><a name="691"></a>691</td><td class="c3">2</td><td class="c1"><span title="Avg 950ns">2µs</span></td><td></td><td></td><td class="s"> $Cache{$cache_key} = $wn;</td></tr>
<tr><td class="h"><a name="692"></a>692</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="693"></a>693</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="694"></a>694</td><td class="c3">2</td><td class="c1"><span title="Avg 1µs">2µs</span></td><td class="c3">2</td><td class="c0">6.39s</td><td class="s"> $wc = &runloop($n, $code);<div class="calls"><div class="calls_out"> # spent 6.39s making 2 calls to <a href="Benchmark-pm-27-line.html#628">Benchmark::runloop</a>, avg 3.19s/call</div></div></td></tr>
<tr><td class="h"><a name="695"></a>695</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="696"></a>696</td><td class="c3">2</td><td class="c1"><span title="Avg 1µs">2µs</span></td><td class="c3">2</td><td class="c3">10µs</td><td class="s"> $wd = timediff($wc, $wn);<div class="calls"><div class="calls_out"> # spent 10µs making 2 calls to <a href="Benchmark-pm-27-line.html#551">Benchmark::timediff</a>, avg 5µs/call</div></div></td></tr>
<tr><td class="h"><a name="697"></a>697</td><td class="c3">2</td><td class="c2"><span title="Avg 900ns">2µs</span></td><td class="c3">2</td><td class="c3">2µs</td><td class="s"> timedebug("timeit: ",$wc);<div class="calls"><div class="calls_out"> # spent 2µs making 2 calls to <a href="Benchmark-pm-27-line.html#617">Benchmark::timedebug</a>, avg 950ns/call</div></div></td></tr>
<tr><td class="h"><a name="698"></a>698</td><td class="c3">2</td><td class="c2"><span title="Avg 800ns">2µs</span></td><td class="c3">2</td><td class="c3">2µs</td><td class="s"> timedebug(" - ",$wn);<div class="calls"><div class="calls_out"> # spent 2µs making 2 calls to <a href="Benchmark-pm-27-line.html#617">Benchmark::timedebug</a>, avg 850ns/call</div></div></td></tr>
<tr><td class="h"><a name="699"></a>699</td><td class="c3">2</td><td class="c3"><span title="Avg 600ns">1µs</span></td><td class="c3">2</td><td class="c3">2µs</td><td class="s"> timedebug(" = ",$wd);<div class="calls"><div class="calls_out"> # spent 2µs making 2 calls to <a href="Benchmark-pm-27-line.html#617">Benchmark::timedebug</a>, avg 750ns/call</div></div></td></tr>
<tr><td class="h"><a name="700"></a>700</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="701"></a>701</td><td class="c3">2</td><td class="c0"><span title="Avg 3µs">7µs</span></td><td></td><td></td><td class="s"> $wd;</td></tr>
<tr><td class="h"><a name="702"></a>702</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="703"></a>703</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="704"></a>704</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="705"></a>705</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s">my $default_for = 3;</td></tr>
<tr><td class="h"><a name="706"></a>706</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s">my $min_for = 0.1;</td></tr>
<tr><td class="h"><a name="707"></a>707</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="708"></a>708</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="709"></a>709</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{countit} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="710"></a>710</td><td></td><td></td><td></td><td></td><td class="s">usage: $result = countit($time, 'code' ); or</td></tr>
<tr><td class="h"><a name="711"></a>711</td><td></td><td></td><td></td><td></td><td class="s"> $result = countit($time, sub { code } );</td></tr>
<tr><td class="h"><a name="712"></a>712</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="713"></a>713</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="714"></a>714</td><td></td><td></td><td></td><td></td><td class="s">sub countit {</td></tr>
<tr><td class="h"><a name="715"></a>715</td><td></td><td></td><td></td><td></td><td class="s"> my ( $tmax, $code ) = @_;</td></tr>
<tr><td class="h"><a name="716"></a>716</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="717"></a>717</td><td></td><td></td><td></td><td></td><td class="s"> die usage unless @_;</td></tr>
<tr><td class="h"><a name="718"></a>718</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="719"></a>719</td><td></td><td></td><td></td><td></td><td class="s"> if ( not defined $tmax or $tmax == 0 ) {</td></tr>
<tr><td class="h"><a name="720"></a>720</td><td></td><td></td><td></td><td></td><td class="s"> $tmax = $default_for;</td></tr>
<tr><td class="h"><a name="721"></a>721</td><td></td><td></td><td></td><td></td><td class="s"> } elsif ( $tmax < 0 ) {</td></tr>
<tr><td class="h"><a name="722"></a>722</td><td></td><td></td><td></td><td></td><td class="s"> $tmax = -$tmax;</td></tr>
<tr><td class="h"><a name="723"></a>723</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="724"></a>724</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="725"></a>725</td><td></td><td></td><td></td><td></td><td class="s"> die "countit($tmax, ...): timelimit cannot be less than $min_for.\n"</td></tr>
<tr><td class="h"><a name="726"></a>726</td><td></td><td></td><td></td><td></td><td class="s"> if $tmax < $min_for;</td></tr>
<tr><td class="h"><a name="727"></a>727</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="728"></a>728</td><td></td><td></td><td></td><td></td><td class="s"> my ($n, $tc);</td></tr>
<tr><td class="h"><a name="729"></a>729</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="730"></a>730</td><td></td><td></td><td></td><td></td><td class="s"> # First find the minimum $n that gives a significant timing.</td></tr>
<tr><td class="h"><a name="731"></a>731</td><td></td><td></td><td></td><td></td><td class="s"> my $zeros=0;</td></tr>
<tr><td class="h"><a name="732"></a>732</td><td></td><td></td><td></td><td></td><td class="s"> for ($n = 1; ; $n *= 2 ) {</td></tr>
<tr><td class="h"><a name="733"></a>733</td><td></td><td></td><td></td><td></td><td class="s"> my $td = timeit($n, $code);</td></tr>
<tr><td class="h"><a name="734"></a>734</td><td></td><td></td><td></td><td></td><td class="s"> $tc = $td->[1] + $td->[2];</td></tr>
<tr><td class="h"><a name="735"></a>735</td><td></td><td></td><td></td><td></td><td class="s"> if ( $tc <= 0 and $n > 1024 ) {</td></tr>
<tr><td class="h"><a name="736"></a>736</td><td></td><td></td><td></td><td></td><td class="s"> ++$zeros > 16</td></tr>
<tr><td class="h"><a name="737"></a>737</td><td></td><td></td><td></td><td></td><td class="s"> and die "Timing is consistently zero in estimation loop, cannot benchmark. N=$n\n";</td></tr>
<tr><td class="h"><a name="738"></a>738</td><td></td><td></td><td></td><td></td><td class="s"> } else {</td></tr>
<tr><td class="h"><a name="739"></a>739</td><td></td><td></td><td></td><td></td><td class="s"> $zeros = 0;</td></tr>
<tr><td class="h"><a name="740"></a>740</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="741"></a>741</td><td></td><td></td><td></td><td></td><td class="s"> last if $tc > 0.1;</td></tr>
<tr><td class="h"><a name="742"></a>742</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="743"></a>743</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="744"></a>744</td><td></td><td></td><td></td><td></td><td class="s"> my $nmin = $n;</td></tr>
<tr><td class="h"><a name="745"></a>745</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="746"></a>746</td><td></td><td></td><td></td><td></td><td class="s"> # Get $n high enough that we can guess the final $n with some accuracy.</td></tr>
<tr><td class="h"><a name="747"></a>747</td><td></td><td></td><td></td><td></td><td class="s"> my $tpra = 0.1 * $tmax; # Target/time practice.</td></tr>
<tr><td class="h"><a name="748"></a>748</td><td></td><td></td><td></td><td></td><td class="s"> while ( $tc < $tpra ) {</td></tr>
<tr><td class="h"><a name="749"></a>749</td><td></td><td></td><td></td><td></td><td class="s"> # The 5% fudge is to keep us from iterating again all</td></tr>
<tr><td class="h"><a name="750"></a>750</td><td></td><td></td><td></td><td></td><td class="s"> # that often (this speeds overall responsiveness when $tmax is big</td></tr>
<tr><td class="h"><a name="751"></a>751</td><td></td><td></td><td></td><td></td><td class="s"> # and we guess a little low). This does not noticably affect </td></tr>
<tr><td class="h"><a name="752"></a>752</td><td></td><td></td><td></td><td></td><td class="s"> # accuracy since we're not counting these times.</td></tr>
<tr><td class="h"><a name="753"></a>753</td><td></td><td></td><td></td><td></td><td class="s"> $n = int( $tpra * 1.05 * $n / $tc ); # Linear approximation.</td></tr>
<tr><td class="h"><a name="754"></a>754</td><td></td><td></td><td></td><td></td><td class="s"> my $td = timeit($n, $code);</td></tr>
<tr><td class="h"><a name="755"></a>755</td><td></td><td></td><td></td><td></td><td class="s"> my $new_tc = $td->[1] + $td->[2];</td></tr>
<tr><td class="h"><a name="756"></a>756</td><td></td><td></td><td></td><td></td><td class="s"> # Make sure we are making progress.</td></tr>
<tr><td class="h"><a name="757"></a>757</td><td></td><td></td><td></td><td></td><td class="s"> $tc = $new_tc > 1.2 * $tc ? $new_tc : 1.2 * $tc;</td></tr>
<tr><td class="h"><a name="758"></a>758</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="759"></a>759</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="760"></a>760</td><td></td><td></td><td></td><td></td><td class="s"> # Now, do the 'for real' timing(s), repeating until we exceed</td></tr>
<tr><td class="h"><a name="761"></a>761</td><td></td><td></td><td></td><td></td><td class="s"> # the max.</td></tr>
<tr><td class="h"><a name="762"></a>762</td><td></td><td></td><td></td><td></td><td class="s"> my $ntot = 0;</td></tr>
<tr><td class="h"><a name="763"></a>763</td><td></td><td></td><td></td><td></td><td class="s"> my $rtot = 0;</td></tr>
<tr><td class="h"><a name="764"></a>764</td><td></td><td></td><td></td><td></td><td class="s"> my $utot = 0.0;</td></tr>
<tr><td class="h"><a name="765"></a>765</td><td></td><td></td><td></td><td></td><td class="s"> my $stot = 0.0;</td></tr>
<tr><td class="h"><a name="766"></a>766</td><td></td><td></td><td></td><td></td><td class="s"> my $cutot = 0.0;</td></tr>
<tr><td class="h"><a name="767"></a>767</td><td></td><td></td><td></td><td></td><td class="s"> my $cstot = 0.0;</td></tr>
<tr><td class="h"><a name="768"></a>768</td><td></td><td></td><td></td><td></td><td class="s"> my $ttot = 0.0;</td></tr>
<tr><td class="h"><a name="769"></a>769</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="770"></a>770</td><td></td><td></td><td></td><td></td><td class="s"> # The 5% fudge is because $n is often a few % low even for routines</td></tr>
<tr><td class="h"><a name="771"></a>771</td><td></td><td></td><td></td><td></td><td class="s"> # with stable times and avoiding extra timeit()s is nice for</td></tr>
<tr><td class="h"><a name="772"></a>772</td><td></td><td></td><td></td><td></td><td class="s"> # accuracy's sake.</td></tr>
<tr><td class="h"><a name="773"></a>773</td><td></td><td></td><td></td><td></td><td class="s"> $n = int( $n * ( 1.05 * $tmax / $tc ) );</td></tr>
<tr><td class="h"><a name="774"></a>774</td><td></td><td></td><td></td><td></td><td class="s"> $zeros=0;</td></tr>
<tr><td class="h"><a name="775"></a>775</td><td></td><td></td><td></td><td></td><td class="s"> while () {</td></tr>
<tr><td class="h"><a name="776"></a>776</td><td></td><td></td><td></td><td></td><td class="s"> my $td = timeit($n, $code);</td></tr>
<tr><td class="h"><a name="777"></a>777</td><td></td><td></td><td></td><td></td><td class="s"> $ntot += $n;</td></tr>
<tr><td class="h"><a name="778"></a>778</td><td></td><td></td><td></td><td></td><td class="s"> $rtot += $td->[0];</td></tr>
<tr><td class="h"><a name="779"></a>779</td><td></td><td></td><td></td><td></td><td class="s"> $utot += $td->[1];</td></tr>
<tr><td class="h"><a name="780"></a>780</td><td></td><td></td><td></td><td></td><td class="s"> $stot += $td->[2];</td></tr>
<tr><td class="h"><a name="781"></a>781</td><td></td><td></td><td></td><td></td><td class="s"> $cutot += $td->[3];</td></tr>
<tr><td class="h"><a name="782"></a>782</td><td></td><td></td><td></td><td></td><td class="s"> $cstot += $td->[4];</td></tr>
<tr><td class="h"><a name="783"></a>783</td><td></td><td></td><td></td><td></td><td class="s"> $ttot = $utot + $stot;</td></tr>
<tr><td class="h"><a name="784"></a>784</td><td></td><td></td><td></td><td></td><td class="s"> last if $ttot >= $tmax;</td></tr>
<tr><td class="h"><a name="785"></a>785</td><td></td><td></td><td></td><td></td><td class="s"> if ( $ttot <= 0 ) {</td></tr>
<tr><td class="h"><a name="786"></a>786</td><td></td><td></td><td></td><td></td><td class="s"> ++$zeros > 16</td></tr>
<tr><td class="h"><a name="787"></a>787</td><td></td><td></td><td></td><td></td><td class="s"> and die "Timing is consistently zero, cannot benchmark. N=$n\n";</td></tr>
<tr><td class="h"><a name="788"></a>788</td><td></td><td></td><td></td><td></td><td class="s"> } else {</td></tr>
<tr><td class="h"><a name="789"></a>789</td><td></td><td></td><td></td><td></td><td class="s"> $zeros = 0;</td></tr>
<tr><td class="h"><a name="790"></a>790</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="791"></a>791</td><td></td><td></td><td></td><td></td><td class="s"> $ttot = 0.01 if $ttot < 0.01;</td></tr>
<tr><td class="h"><a name="792"></a>792</td><td></td><td></td><td></td><td></td><td class="s"> my $r = $tmax / $ttot - 1; # Linear approximation.</td></tr>
<tr><td class="h"><a name="793"></a>793</td><td></td><td></td><td></td><td></td><td class="s"> $n = int( $r * $ntot );</td></tr>
<tr><td class="h"><a name="794"></a>794</td><td></td><td></td><td></td><td></td><td class="s"> $n = $nmin if $n < $nmin;</td></tr>
<tr><td class="h"><a name="795"></a>795</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="796"></a>796</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="797"></a>797</td><td></td><td></td><td></td><td></td><td class="s"> return bless [ $rtot, $utot, $stot, $cutot, $cstot, $ntot ];</td></tr>
<tr><td class="h"><a name="798"></a>798</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="799"></a>799</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="800"></a>800</td><td></td><td></td><td></td><td></td><td class="s"># --- Functions implementing high-level time-then-print utilities</td></tr>
<tr><td class="h"><a name="801"></a>801</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="802"></a>802</td><td></td><td></td><td></td><td></td><td class="s">sub n_to_for {</td></tr>
<tr><td class="h"><a name="803"></a>803</td><td></td><td></td><td></td><td></td><td class="s"> my $n = shift;</td></tr>
<tr><td class="h"><a name="804"></a>804</td><td></td><td></td><td></td><td></td><td class="s"> return $n == 0 ? $default_for : $n < 0 ? -$n : undef;</td></tr>
<tr><td class="h"><a name="805"></a>805</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="806"></a>806</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="807"></a>807</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$_Usage{timethis} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="808"></a>808</td><td></td><td></td><td></td><td></td><td class="s">usage: $result = timethis($time, 'code' ); or</td></tr>
<tr><td class="h"><a name="809"></a>809</td><td></td><td></td><td></td><td></td><td class="s"> $result = timethis($time, sub { code } );</td></tr>
<tr><td class="h"><a name="810"></a>810</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="811"></a>811</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="812"></a>812</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 6.68s (40µs+6.68) within Benchmark::timethis which was called 2 times, avg 3.34s/call:
# 2 times (40µs+6.68s) by Benchmark::timethese at <a href="Benchmark-pm-27-line.html#877">line 877</a>, avg 3.34s/call</div></div>sub timethis{</td></tr>
<tr><td class="h"><a name="813"></a>813</td><td class="c3">2</td><td class="c3"><span title="Avg 550ns">1µs</span></td><td></td><td></td><td class="s"> my($n, $code, $title, $style) = @_;</td></tr>
<tr><td class="h"><a name="814"></a>814</td><td class="c3">2</td><td class="c3"><span title="Avg 150ns">300ns</span></td><td></td><td></td><td class="s"> my($t, $forn);</td></tr>
<tr><td class="h"><a name="815"></a>815</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="816"></a>816</td><td class="c3">2</td><td class="c1"><span title="Avg 950ns">2µs</span></td><td></td><td></td><td class="s"> die usage unless defined $code and</td></tr>
<tr><td class="h"><a name="817"></a>817</td><td></td><td></td><td></td><td></td><td class="s"> (!ref $code or ref $code eq 'CODE');</td></tr>
<tr><td class="h"><a name="818"></a>818</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="819"></a>819</td><td class="c3">2</td><td class="c3"><span title="Avg 450ns">900ns</span></td><td></td><td></td><td class="s"> if ( $n > 0 ) {</td></tr>
<tr><td class="h"><a name="820"></a>820</td><td class="c3">2</td><td class="c3"><span title="Avg 450ns">900ns</span></td><td></td><td></td><td class="s"> croak "non-integer loopcount $n, stopped" if int($n)<$n;</td></tr>
<tr><td class="h"><a name="821"></a>821</td><td class="c3">2</td><td class="c0"><span title="Avg 2µs">3µs</span></td><td class="c3">2</td><td class="c0">6.68s</td><td class="s"> $t = timeit($n, $code);<div class="calls"><div class="calls_out"> # spent 6.68s making 2 calls to <a href="Benchmark-pm-27-line.html#675">Benchmark::timeit</a>, avg 3.34s/call</div></div></td></tr>
<tr><td class="h"><a name="822"></a>822</td><td class="c3">2</td><td class="c3"><span title="Avg 450ns">900ns</span></td><td></td><td></td><td class="s"> $title = "timethis $n" unless defined $title;</td></tr>
<tr><td class="h"><a name="823"></a>823</td><td></td><td></td><td></td><td></td><td class="s"> } else {</td></tr>
<tr><td class="h"><a name="824"></a>824</td><td></td><td></td><td></td><td></td><td class="s"> my $fort = n_to_for( $n );</td></tr>
<tr><td class="h"><a name="825"></a>825</td><td></td><td></td><td></td><td></td><td class="s"> $t = countit( $fort, $code );</td></tr>
<tr><td class="h"><a name="826"></a>826</td><td></td><td></td><td></td><td></td><td class="s"> $title = "timethis for $fort" unless defined $title;</td></tr>
<tr><td class="h"><a name="827"></a>827</td><td></td><td></td><td></td><td></td><td class="s"> $forn = $t->[-1];</td></tr>
<tr><td class="h"><a name="828"></a>828</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="829"></a>829</td><td class="c3">2</td><td class="c0"><span title="Avg 4µs">8µs</span></td><td></td><td></td><td class="s"> local $| = 1;</td></tr>
<tr><td class="h"><a name="830"></a>830</td><td class="c3">2</td><td class="c3"><span title="Avg 200ns">400ns</span></td><td></td><td></td><td class="s"> $style = "" unless defined $style;</td></tr>
<tr><td class="h"><a name="831"></a>831</td><td class="c3">2</td><td class="c3"><span title="Avg 500ns">1µs</span></td><td></td><td></td><td class="s"> printf("%10s: ", $title) unless $style eq 'none';</td></tr>
<tr><td class="h"><a name="832"></a>832</td><td class="c3">2</td><td class="c3"><span title="Avg 250ns">500ns</span></td><td></td><td></td><td class="s"> print timestr($t, $style, $Default_Format),"\n" unless $style eq 'none';</td></tr>
<tr><td class="h"><a name="833"></a>833</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="834"></a>834</td><td class="c3">2</td><td class="c3"><span title="Avg 200ns">400ns</span></td><td></td><td></td><td class="s"> $n = $forn if defined $forn;</td></tr>
<tr><td class="h"><a name="835"></a>835</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="836"></a>836</td><td></td><td></td><td></td><td></td><td class="s"> # A conservative warning to spot very silly tests.</td></tr>
<tr><td class="h"><a name="837"></a>837</td><td></td><td></td><td></td><td></td><td class="s"> # Don't assume that your benchmark is ok simply because</td></tr>
<tr><td class="h"><a name="838"></a>838</td><td></td><td></td><td></td><td></td><td class="s"> # you don't get this warning!</td></tr>
<tr><td class="h"><a name="839"></a>839</td><td class="c3">2</td><td class="c0"><span title="Avg 4µs">8µs</span></td><td class="c0">4</td><td class="c3">10µs</td><td class="s"> print " (warning: too few iterations for a reliable count)\n"<div class="calls"><div class="calls_out"> # spent 6µs making 2 calls to <a href="Benchmark-pm-27-line.html#542">Benchmark::cpu_a</a>, avg 3µs/call
# spent 4µs making 2 calls to <a href="Benchmark-pm-27-line.html#543">Benchmark::real</a>, avg 2µs/call</div></div></td></tr>
<tr><td class="h"><a name="840"></a>840</td><td></td><td></td><td></td><td></td><td class="s"> if $n < $Min_Count</td></tr>
<tr><td class="h"><a name="841"></a>841</td><td></td><td></td><td></td><td></td><td class="s"> || ($t->real < 1 && $n < 1000)</td></tr>
<tr><td class="h"><a name="842"></a>842</td><td></td><td></td><td></td><td></td><td class="s"> || $t->cpu_a < $Min_CPU;</td></tr>
<tr><td class="h"><a name="843"></a>843</td><td class="c3">2</td><td class="c0"><span title="Avg 3µs">6µs</span></td><td></td><td></td><td class="s"> $t;</td></tr>
<tr><td class="h"><a name="844"></a>844</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="845"></a>845</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="846"></a>846</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="847"></a>847</td><td class="c3">1</td><td class="c1"><span title="Avg 2µs">2µs</span></td><td></td><td></td><td class="s">$_Usage{timethese} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="848"></a>848</td><td></td><td></td><td></td><td></td><td class="s">usage: timethese($count, { Name1 => 'code1', ... }); or</td></tr>
<tr><td class="h"><a name="849"></a>849</td><td></td><td></td><td></td><td></td><td class="s"> timethese($count, { Name1 => sub { code1 }, ... });</td></tr>
<tr><td class="h"><a name="850"></a>850</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="851"></a>851</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="852"></a>852</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 6.68s (26µs+6.68) within Benchmark::timethese which was called:
# once (26µs+6.68s) by Benchmark::cmpthese at <a href="Benchmark-pm-27-line.html#903">line 903</a></div></div>sub timethese{</td></tr>
<tr><td class="h"><a name="853"></a>853</td><td class="c3">1</td><td class="c3"><span title="Avg 500ns">500ns</span></td><td></td><td></td><td class="s"> my($n, $alt, $style) = @_;</td></tr>
<tr><td class="h"><a name="854"></a>854</td><td class="c3">1</td><td class="c3"><span title="Avg 600ns">600ns</span></td><td></td><td></td><td class="s"> die usage unless ref $alt eq 'HASH';</td></tr>
<tr><td class="h"><a name="855"></a>855</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="856"></a>856</td><td class="c3">1</td><td class="c0"><span title="Avg 8µs">8µs</span></td><td class="c3">1</td><td class="c3">2µs</td><td class="s"> my @names = sort keys %$alt;<div class="calls"><div class="calls_out"> # spent 2µs making 1 call to <a href="Benchmark-pm-27-line.html#Benchmark__CORE_sort">Benchmark::CORE:sort</a></div></div></td></tr>
<tr><td class="h"><a name="857"></a>857</td><td class="c3">1</td><td class="c3"><span title="Avg 300ns">300ns</span></td><td></td><td></td><td class="s"> $style = "" unless defined $style;</td></tr>
<tr><td class="h"><a name="858"></a>858</td><td class="c3">1</td><td class="c3"><span title="Avg 500ns">500ns</span></td><td></td><td></td><td class="s"> print "Benchmark: " unless $style eq 'none';</td></tr>
<tr><td class="h"><a name="859"></a>859</td><td class="c3">1</td><td class="c3"><span title="Avg 600ns">600ns</span></td><td></td><td></td><td class="s"> if ( $n > 0 ) {</td></tr>
<tr><td class="h"><a name="860"></a>860</td><td class="c3">1</td><td class="c3"><span title="Avg 700ns">700ns</span></td><td></td><td></td><td class="s"> croak "non-integer loopcount $n, stopped" if int($n)<$n;</td></tr>
<tr><td class="h"><a name="861"></a>861</td><td class="c3">1</td><td class="c3"><span title="Avg 300ns">300ns</span></td><td></td><td></td><td class="s"> print "timing $n iterations of" unless $style eq 'none';</td></tr>
<tr><td class="h"><a name="862"></a>862</td><td></td><td></td><td></td><td></td><td class="s"> } else {</td></tr>
<tr><td class="h"><a name="863"></a>863</td><td></td><td></td><td></td><td></td><td class="s"> print "running" unless $style eq 'none';</td></tr>
<tr><td class="h"><a name="864"></a>864</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="865"></a>865</td><td class="c3">1</td><td class="c3"><span title="Avg 300ns">300ns</span></td><td></td><td></td><td class="s"> print " ", join(', ',@names) unless $style eq 'none';</td></tr>
<tr><td class="h"><a name="866"></a>866</td><td class="c3">1</td><td class="c3"><span title="Avg 400ns">400ns</span></td><td></td><td></td><td class="s"> unless ( $n > 0 ) {</td></tr>
<tr><td class="h"><a name="867"></a>867</td><td></td><td></td><td></td><td></td><td class="s"> my $for = n_to_for( $n );</td></tr>
<tr><td class="h"><a name="868"></a>868</td><td></td><td></td><td></td><td></td><td class="s"> print ", each" if $n > 1 && $style ne 'none';</td></tr>
<tr><td class="h"><a name="869"></a>869</td><td></td><td></td><td></td><td></td><td class="s"> print " for at least $for CPU seconds" unless $style eq 'none';</td></tr>
<tr><td class="h"><a name="870"></a>870</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="871"></a>871</td><td class="c3">1</td><td class="c3"><span title="Avg 300ns">300ns</span></td><td></td><td></td><td class="s"> print "...\n" unless $style eq 'none';</td></tr>
<tr><td class="h"><a name="872"></a>872</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="873"></a>873</td><td></td><td></td><td></td><td></td><td class="s"> # we could save the results in an array and produce a summary here</td></tr>
<tr><td class="h"><a name="874"></a>874</td><td></td><td></td><td></td><td></td><td class="s"> # sum, min, max, avg etc etc</td></tr>
<tr><td class="h"><a name="875"></a>875</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s"> my %results;</td></tr>
<tr><td class="h"><a name="876"></a>876</td><td class="c3">1</td><td class="c3"><span title="Avg 800ns">800ns</span></td><td></td><td></td><td class="s"> foreach my $name (@names) {</td></tr>
<tr><td class="h"><a name="877"></a>877</td><td class="c3">2</td><td class="c0"><span title="Avg 3µs">7µs</span></td><td class="c3">2</td><td class="c0">6.68s</td><td class="s"> $results{$name} = timethis ($n, $alt -> {$name}, $name, $style);<div class="calls"><div class="calls_out"> # spent 6.68s making 2 calls to <a href="Benchmark-pm-27-line.html#812">Benchmark::timethis</a>, avg 3.34s/call</div></div></td></tr>
<tr><td class="h"><a name="878"></a>878</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="879"></a>879</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="880"></a>880</td><td class="c3">1</td><td class="c0"><span title="Avg 5µs">5µs</span></td><td></td><td></td><td class="s"> return \%results;</td></tr>
<tr><td class="h"><a name="881"></a>881</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="882"></a>882</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="883"></a>883</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="884"></a>884</td><td class="c3">1</td><td class="c3"><span title="Avg 400ns">400ns</span></td><td></td><td></td><td class="s">$_Usage{cmpthese} = <<'USAGE';</td></tr>
<tr><td class="h"><a name="885"></a>885</td><td></td><td></td><td></td><td></td><td class="s">usage: cmpthese($count, { Name1 => 'code1', ... }); or</td></tr>
<tr><td class="h"><a name="886"></a>886</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese($count, { Name1 => sub { code1 }, ... }); or</td></tr>
<tr><td class="h"><a name="887"></a>887</td><td></td><td></td><td></td><td></td><td class="s"> cmpthese($result, $style);</td></tr>
<tr><td class="h"><a name="888"></a>888</td><td></td><td></td><td></td><td></td><td class="s">USAGE</td></tr>
<tr><td class="h"><a name="889"></a>889</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="890"></a>890</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 6.68s (108µs+6.68) within Benchmark::cmpthese which was called:
# once (108µs+6.68s) by main::RUNTIME at <a href="examples-Atom-timer-pl-1-line.html#34">line 34 of examples/Atom-timer.pl</a></div></div>sub cmpthese{</td></tr>
<tr><td class="h"><a name="891"></a>891</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s"> my ($results, $style);</td></tr>
<tr><td class="h"><a name="892"></a>892</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="893"></a>893</td><td></td><td></td><td></td><td></td><td class="s"> # $count can be a blessed object.</td></tr>
<tr><td class="h"><a name="894"></a>894</td><td class="c3">1</td><td class="c3"><span title="Avg 800ns">800ns</span></td><td></td><td></td><td class="s"> if ( ref $_[0] eq 'HASH' ) {</td></tr>
<tr><td class="h"><a name="895"></a>895</td><td></td><td></td><td></td><td></td><td class="s"> ($results, $style) = @_;</td></tr>
<tr><td class="h"><a name="896"></a>896</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="897"></a>897</td><td></td><td></td><td></td><td></td><td class="s"> else {</td></tr>
<tr><td class="h"><a name="898"></a>898</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s"> my($count, $code) = @_[0,1];</td></tr>
<tr><td class="h"><a name="899"></a>899</td><td class="c3">1</td><td class="c3"><span title="Avg 400ns">400ns</span></td><td></td><td></td><td class="s"> $style = $_[2] if defined $_[2];</td></tr>
<tr><td class="h"><a name="900"></a>900</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="901"></a>901</td><td class="c3">1</td><td class="c3"><span title="Avg 600ns">600ns</span></td><td></td><td></td><td class="s"> die usage unless ref $code eq 'HASH';</td></tr>
<tr><td class="h"><a name="902"></a>902</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="903"></a>903</td><td class="c3">1</td><td class="c1"><span title="Avg 2µs">2µs</span></td><td class="c3">1</td><td class="c0">6.68s</td><td class="s"> $results = timethese($count, $code, ($style || "none"));<div class="calls"><div class="calls_out"> # spent 6.68s making 1 call to <a href="Benchmark-pm-27-line.html#852">Benchmark::timethese</a></div></div></td></tr>
<tr><td class="h"><a name="904"></a>904</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="905"></a>905</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="906"></a>906</td><td class="c3">1</td><td class="c3"><span title="Avg 600ns">600ns</span></td><td></td><td></td><td class="s"> $style = "" unless defined $style;</td></tr>
<tr><td class="h"><a name="907"></a>907</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="908"></a>908</td><td></td><td></td><td></td><td></td><td class="s"> # Flatten in to an array of arrays with the name as the first field</td></tr>
<tr><td class="h"><a name="909"></a>909</td><td class="c3">1</td><td class="c0"><span title="Avg 6µs">6µs</span></td><td></td><td></td><td class="s"> my @vals = map{ [ $_, @{$results->{$_}} ] } keys %$results;</td></tr>
<tr><td class="h"><a name="910"></a>910</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="911"></a>911</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s"> for (@vals) {</td></tr>
<tr><td class="h"><a name="912"></a>912</td><td></td><td></td><td></td><td></td><td class="s"> # The epsilon fudge here is to prevent div by 0. Since clock</td></tr>
<tr><td class="h"><a name="913"></a>913</td><td></td><td></td><td></td><td></td><td class="s"> # resolutions are much larger, it's below the noise floor.</td></tr>
<tr><td class="h"><a name="914"></a>914</td><td class="c3">2</td><td class="c3"><span title="Avg 200ns">400ns</span></td><td></td><td></td><td class="s"> my $elapsed = do {</td></tr>
<tr><td class="h"><a name="915"></a>915</td><td class="c3">2</td><td class="c3"><span title="Avg 450ns">900ns</span></td><td></td><td></td><td class="s"> if ($style eq 'nop') {$_->[4]+$_->[5]}</td></tr>
<tr><td class="h"><a name="916"></a>916</td><td class="c3">2</td><td class="c1"><span title="Avg 900ns">2µs</span></td><td></td><td></td><td class="s"> elsif ($style eq 'noc') {$_->[2]+$_->[3]}</td></tr>
<tr><td class="h"><a name="917"></a>917</td><td></td><td></td><td></td><td></td><td class="s"> else {$_->[2]+$_->[3]+$_->[4]+$_->[5]}</td></tr>
<tr><td class="h"><a name="918"></a>918</td><td></td><td></td><td></td><td></td><td class="s"> };</td></tr>
<tr><td class="h"><a name="919"></a>919</td><td class="c3">2</td><td class="c3"><span title="Avg 550ns">1µs</span></td><td></td><td></td><td class="s"> my $rate = $_->[6]/(($elapsed)+0.000000000000001);</td></tr>
<tr><td class="h"><a name="920"></a>920</td><td class="c3">2</td><td class="c3"><span title="Avg 600ns">1µs</span></td><td></td><td></td><td class="s"> $_->[7] = $rate;</td></tr>
<tr><td class="h"><a name="921"></a>921</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="922"></a>922</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="923"></a>923</td><td></td><td></td><td></td><td></td><td class="s"> # Sort by rate</td></tr>
<tr><td class="h"><a name="924"></a>924</td><td class="c3">1</td><td class="c0"><span title="Avg 7µs">7µs</span></td><td class="c3">1</td><td class="c3">4µs</td><td class="s"> @vals = sort { $a->[7] <=> $b->[7] } @vals;<div class="calls"><div class="calls_out"> # spent 4µs making 1 call to <a href="Benchmark-pm-27-line.html#Benchmark__CORE_sort">Benchmark::CORE:sort</a></div></div></td></tr>
<tr><td class="h"><a name="925"></a>925</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="926"></a>926</td><td></td><td></td><td></td><td></td><td class="s"> # If more than half of the rates are greater than one...</td></tr>
<tr><td class="h"><a name="927"></a>927</td><td class="c3">1</td><td class="c1"><span title="Avg 2µs">2µs</span></td><td></td><td></td><td class="s"> my $display_as_rate = @vals ? ($vals[$#vals>>1]->[7] > 1) : 0;</td></tr>
<tr><td class="h"><a name="928"></a>928</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="929"></a>929</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s"> my @rows;</td></tr>
<tr><td class="h"><a name="930"></a>930</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s"> my @col_widths;</td></tr>
<tr><td class="h"><a name="931"></a>931</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="932"></a>932</td><td></td><td></td><td></td><td></td><td class="s"> my @top_row = ( </td></tr>
<tr><td class="h"><a name="933"></a>933</td><td></td><td></td><td></td><td></td><td class="s"> '', </td></tr>
<tr><td class="h"><a name="934"></a>934</td><td></td><td></td><td></td><td></td><td class="s"> $display_as_rate ? 'Rate' : 's/iter', </td></tr>
<tr><td class="h"><a name="935"></a>935</td><td class="c3">1</td><td class="c1"><span title="Avg 2µs">2µs</span></td><td></td><td></td><td class="s"> map { $_->[0] } @vals </td></tr>
<tr><td class="h"><a name="936"></a>936</td><td></td><td></td><td></td><td></td><td class="s"> );</td></tr>
<tr><td class="h"><a name="937"></a>937</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="938"></a>938</td><td class="c3">1</td><td class="c3"><span title="Avg 500ns">500ns</span></td><td></td><td></td><td class="s"> push @rows, \@top_row;</td></tr>
<tr><td class="h"><a name="939"></a>939</td><td class="c3">1</td><td class="c1"><span title="Avg 2µs">2µs</span></td><td></td><td></td><td class="s"> @col_widths = map { length( $_ ) } @top_row;</td></tr>
<tr><td class="h"><a name="940"></a>940</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="941"></a>941</td><td></td><td></td><td></td><td></td><td class="s"> # Build the data rows</td></tr>
<tr><td class="h"><a name="942"></a>942</td><td></td><td></td><td></td><td></td><td class="s"> # We leave the last column in even though it never has any data. Perhaps</td></tr>
<tr><td class="h"><a name="943"></a>943</td><td></td><td></td><td></td><td></td><td class="s"> # it should go away. Also, perhaps a style for a single column of</td></tr>
<tr><td class="h"><a name="944"></a>944</td><td></td><td></td><td></td><td></td><td class="s"> # percentages might be nice.</td></tr>
<tr><td class="h"><a name="945"></a>945</td><td class="c3">1</td><td class="c3"><span title="Avg 800ns">800ns</span></td><td></td><td></td><td class="s"> for my $row_val ( @vals ) {</td></tr>
<tr><td class="h"><a name="946"></a>946</td><td class="c3">2</td><td class="c3"><span title="Avg 100ns">200ns</span></td><td></td><td></td><td class="s"> my @row;</td></tr>
<tr><td class="h"><a name="947"></a>947</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="948"></a>948</td><td></td><td></td><td></td><td></td><td class="s"> # Column 0 = test name</td></tr>
<tr><td class="h"><a name="949"></a>949</td><td class="c3">2</td><td class="c3"><span title="Avg 400ns">800ns</span></td><td></td><td></td><td class="s"> push @row, $row_val->[0];</td></tr>
<tr><td class="h"><a name="950"></a>950</td><td class="c3">2</td><td class="c3"><span title="Avg 450ns">900ns</span></td><td></td><td></td><td class="s"> $col_widths[0] = length( $row_val->[0] )</td></tr>
<tr><td class="h"><a name="951"></a>951</td><td></td><td></td><td></td><td></td><td class="s"> if length( $row_val->[0] ) > $col_widths[0];</td></tr>
<tr><td class="h"><a name="952"></a>952</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="953"></a>953</td><td></td><td></td><td></td><td></td><td class="s"> # Column 1 = performance</td></tr>
<tr><td class="h"><a name="954"></a>954</td><td class="c3">2</td><td class="c3"><span title="Avg 200ns">400ns</span></td><td></td><td></td><td class="s"> my $row_rate = $row_val->[7];</td></tr>
<tr><td class="h"><a name="955"></a>955</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="956"></a>956</td><td></td><td></td><td></td><td></td><td class="s"> # We assume that we'll never get a 0 rate.</td></tr>
<tr><td class="h"><a name="957"></a>957</td><td class="c3">2</td><td class="c3"><span title="Avg 250ns">500ns</span></td><td></td><td></td><td class="s"> my $rate = $display_as_rate ? $row_rate : 1 / $row_rate;</td></tr>
<tr><td class="h"><a name="958"></a>958</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="959"></a>959</td><td></td><td></td><td></td><td></td><td class="s"> # Only give a few decimal places before switching to sci. notation,</td></tr>
<tr><td class="h"><a name="960"></a>960</td><td></td><td></td><td></td><td></td><td class="s"> # since the results aren't usually that accurate anyway.</td></tr>
<tr><td class="h"><a name="961"></a>961</td><td class="c3">2</td><td class="c3"><span title="Avg 450ns">900ns</span></td><td></td><td></td><td class="s"> my $format = </td></tr>
<tr><td class="h"><a name="962"></a>962</td><td></td><td></td><td></td><td></td><td class="s"> $rate >= 100 ? </td></tr>
<tr><td class="h"><a name="963"></a>963</td><td></td><td></td><td></td><td></td><td class="s"> "%0.0f" : </td></tr>
<tr><td class="h"><a name="964"></a>964</td><td></td><td></td><td></td><td></td><td class="s"> $rate >= 10 ?</td></tr>
<tr><td class="h"><a name="965"></a>965</td><td></td><td></td><td></td><td></td><td class="s"> "%0.1f" :</td></tr>
<tr><td class="h"><a name="966"></a>966</td><td></td><td></td><td></td><td></td><td class="s"> $rate >= 1 ?</td></tr>
<tr><td class="h"><a name="967"></a>967</td><td></td><td></td><td></td><td></td><td class="s"> "%0.2f" :</td></tr>
<tr><td class="h"><a name="968"></a>968</td><td></td><td></td><td></td><td></td><td class="s"> $rate >= 0.1 ?</td></tr>
<tr><td class="h"><a name="969"></a>969</td><td></td><td></td><td></td><td></td><td class="s"> "%0.3f" :</td></tr>
<tr><td class="h"><a name="970"></a>970</td><td></td><td></td><td></td><td></td><td class="s"> "%0.2e";</td></tr>
<tr><td class="h"><a name="971"></a>971</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="972"></a>972</td><td class="c3">2</td><td class="c3"><span title="Avg 450ns">900ns</span></td><td></td><td></td><td class="s"> $format .= "/s"</td></tr>
<tr><td class="h"><a name="973"></a>973</td><td></td><td></td><td></td><td></td><td class="s"> if $display_as_rate;</td></tr>
<tr><td class="h"><a name="974"></a>974</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="975"></a>975</td><td class="c3">2</td><td class="c0"><span title="Avg 3µs">6µs</span></td><td></td><td></td><td class="s"> my $formatted_rate = sprintf( $format, $rate );</td></tr>
<tr><td class="h"><a name="976"></a>976</td><td class="c3">2</td><td class="c3"><span title="Avg 250ns">500ns</span></td><td></td><td></td><td class="s"> push @row, $formatted_rate;</td></tr>
<tr><td class="h"><a name="977"></a>977</td><td class="c3">2</td><td class="c3"><span title="Avg 350ns">700ns</span></td><td></td><td></td><td class="s"> $col_widths[1] = length( $formatted_rate )</td></tr>
<tr><td class="h"><a name="978"></a>978</td><td></td><td></td><td></td><td></td><td class="s"> if length( $formatted_rate ) > $col_widths[1];</td></tr>
<tr><td class="h"><a name="979"></a>979</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="980"></a>980</td><td></td><td></td><td></td><td></td><td class="s"> # Columns 2..N = performance ratios</td></tr>
<tr><td class="h"><a name="981"></a>981</td><td class="c3">2</td><td class="c3"><span title="Avg 100ns">200ns</span></td><td></td><td></td><td class="s"> my $skip_rest = 0;</td></tr>
<tr><td class="h"><a name="982"></a>982</td><td class="c3">2</td><td class="c3"><span title="Avg 700ns">1µs</span></td><td></td><td></td><td class="s"> for ( my $col_num = 0 ; $col_num < @vals ; ++$col_num ) {</td></tr>
<tr><td class="h"><a name="983"></a>983</td><td class="c0">4</td><td class="c3"><span title="Avg 100ns">400ns</span></td><td></td><td></td><td class="s"> my $col_val = $vals[$col_num];</td></tr>
<tr><td class="h"><a name="984"></a>984</td><td class="c0">4</td><td class="c3"><span title="Avg 25ns">100ns</span></td><td></td><td></td><td class="s"> my $out;</td></tr>
<tr><td class="h"><a name="985"></a>985</td><td class="c0">4</td><td class="c2"><span title="Avg 425ns">2µs</span></td><td></td><td></td><td class="s"> if ( $skip_rest ) {</td></tr>
<tr><td class="h"><a name="986"></a>986</td><td></td><td></td><td></td><td></td><td class="s"> $out = '';</td></tr>
<tr><td class="h"><a name="987"></a>987</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="988"></a>988</td><td></td><td></td><td></td><td></td><td class="s"> elsif ( $col_val->[0] eq $row_val->[0] ) {</td></tr>
<tr><td class="h"><a name="989"></a>989</td><td></td><td></td><td></td><td></td><td class="s"> $out = "--";</td></tr>
<tr><td class="h"><a name="990"></a>990</td><td></td><td></td><td></td><td></td><td class="s"> # $skip_rest = 1;</td></tr>
<tr><td class="h"><a name="991"></a>991</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="992"></a>992</td><td></td><td></td><td></td><td></td><td class="s"> else {</td></tr>
<tr><td class="h"><a name="993"></a>993</td><td class="c3">2</td><td class="c3"><span title="Avg 150ns">300ns</span></td><td></td><td></td><td class="s"> my $col_rate = $col_val->[7];</td></tr>
<tr><td class="h"><a name="994"></a>994</td><td class="c3">2</td><td class="c0"><span title="Avg 2µs">3µs</span></td><td></td><td></td><td class="s"> $out = sprintf( "%.0f%%", 100*$row_rate/$col_rate - 100 );</td></tr>
<tr><td class="h"><a name="995"></a>995</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="996"></a>996</td><td class="c0">4</td><td class="c3"><span title="Avg 200ns">800ns</span></td><td></td><td></td><td class="s"> push @row, $out;</td></tr>
<tr><td class="h"><a name="997"></a>997</td><td class="c0">4</td><td class="c3"><span title="Avg 250ns">1µs</span></td><td></td><td></td><td class="s"> $col_widths[$col_num+2] = length( $out )</td></tr>
<tr><td class="h"><a name="998"></a>998</td><td></td><td></td><td></td><td></td><td class="s"> if length( $out ) > $col_widths[$col_num+2];</td></tr>
<tr><td class="h"><a name="999"></a>999</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1000"></a>1000</td><td></td><td></td><td></td><td></td><td class="s"> # A little wierdness to set the first column width properly</td></tr>
<tr><td class="h"><a name="1001"></a>1001</td><td class="c0">4</td><td class="c3"><span title="Avg 300ns">1µs</span></td><td></td><td></td><td class="s"> $col_widths[$col_num+2] = length( $col_val->[0] )</td></tr>
<tr><td class="h"><a name="1002"></a>1002</td><td></td><td></td><td></td><td></td><td class="s"> if length( $col_val->[0] ) > $col_widths[$col_num+2];</td></tr>
<tr><td class="h"><a name="1003"></a>1003</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="1004"></a>1004</td><td class="c3">2</td><td class="c3"><span title="Avg 600ns">1µs</span></td><td></td><td></td><td class="s"> push @rows, \@row;</td></tr>
<tr><td class="h"><a name="1005"></a>1005</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="1006"></a>1006</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1007"></a>1007</td><td class="c3">1</td><td class="c3"><span title="Avg 300ns">300ns</span></td><td></td><td></td><td class="s"> return \@rows if $style eq "none";</td></tr>
<tr><td class="h"><a name="1008"></a>1008</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1009"></a>1009</td><td></td><td></td><td></td><td></td><td class="s"> # Equalize column widths in the chart as much as possible without</td></tr>
<tr><td class="h"><a name="1010"></a>1010</td><td></td><td></td><td></td><td></td><td class="s"> # exceeding 80 characters. This does not use or affect cols 0 or 1.</td></tr>
<tr><td class="h"><a name="1011"></a>1011</td><td></td><td></td><td></td><td></td><td class="s"> my @sorted_width_refs = </td></tr>
<tr><td class="h"><a name="1012"></a>1012</td><td class="c1">3</td><td class="c0"><span title="Avg 2µs">7µs</span></td><td class="c3">1</td><td class="c3">1µs</td><td class="s"> sort { $$a <=> $$b } map { \$_ } @col_widths[2..$#col_widths];<div class="calls"><div class="calls_out"> # spent 1µs making 1 call to <a href="Benchmark-pm-27-line.html#Benchmark__CORE_sort">Benchmark::CORE:sort</a></div></div></td></tr>
<tr><td class="h"><a name="1013"></a>1013</td><td class="c3">1</td><td class="c3"><span title="Avg 500ns">500ns</span></td><td></td><td></td><td class="s"> my $max_width = ${$sorted_width_refs[-1]};</td></tr>
<tr><td class="h"><a name="1014"></a>1014</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1015"></a>1015</td><td class="c3">1</td><td class="c3"><span title="Avg 400ns">400ns</span></td><td></td><td></td><td class="s"> my $total = @col_widths - 1 ;</td></tr>
<tr><td class="h"><a name="1016"></a>1016</td><td class="c0">5</td><td class="c2"><span title="Avg 300ns">1µs</span></td><td></td><td></td><td class="s"> for ( @col_widths ) { $total += $_ }</td></tr>
<tr><td class="h"><a name="1017"></a>1017</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1018"></a>1018</td><td></td><td></td><td></td><td></td><td class="s"> STRETCHER:</td></tr>
<tr><td class="h"><a name="1019"></a>1019</td><td class="c3">1</td><td class="c3"><span title="Avg 400ns">400ns</span></td><td></td><td></td><td class="s"> while ( $total < 80 ) {</td></tr>
<tr><td class="h"><a name="1020"></a>1020</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s"> my $min_width = ${$sorted_width_refs[0]};</td></tr>
<tr><td class="h"><a name="1021"></a>1021</td><td></td><td></td><td></td><td></td><td class="s"> last</td></tr>
<tr><td class="h"><a name="1022"></a>1022</td><td class="c3">1</td><td class="c3"><span title="Avg 800ns">800ns</span></td><td></td><td></td><td class="s"> if $min_width == $max_width;</td></tr>
<tr><td class="h"><a name="1023"></a>1023</td><td></td><td></td><td></td><td></td><td class="s"> for ( @sorted_width_refs ) {</td></tr>
<tr><td class="h"><a name="1024"></a>1024</td><td></td><td></td><td></td><td></td><td class="s"> last </td></tr>
<tr><td class="h"><a name="1025"></a>1025</td><td></td><td></td><td></td><td></td><td class="s"> if $$_ > $min_width;</td></tr>
<tr><td class="h"><a name="1026"></a>1026</td><td></td><td></td><td></td><td></td><td class="s"> ++$$_;</td></tr>
<tr><td class="h"><a name="1027"></a>1027</td><td></td><td></td><td></td><td></td><td class="s"> ++$total;</td></tr>
<tr><td class="h"><a name="1028"></a>1028</td><td></td><td></td><td></td><td></td><td class="s"> last STRETCHER</td></tr>
<tr><td class="h"><a name="1029"></a>1029</td><td></td><td></td><td></td><td></td><td class="s"> if $total >= 80;</td></tr>
<tr><td class="h"><a name="1030"></a>1030</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="1031"></a>1031</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="1032"></a>1032</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1033"></a>1033</td><td></td><td></td><td></td><td></td><td class="s"> # Dump the output</td></tr>
<tr><td class="h"><a name="1034"></a>1034</td><td class="c3">1</td><td class="c0"><span title="Avg 5µs">5µs</span></td><td></td><td></td><td class="s"> my $format = join( ' ', map { "%${_}s" } @col_widths ) . "\n";</td></tr>
<tr><td class="h"><a name="1035"></a>1035</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s"> substr( $format, 1, 0 ) = '-';</td></tr>
<tr><td class="h"><a name="1036"></a>1036</td><td class="c3">1</td><td class="c3"><span title="Avg 900ns">900ns</span></td><td></td><td></td><td class="s"> for ( @rows ) {</td></tr>
<tr><td class="h"><a name="1037"></a>1037</td><td class="c1">3</td><td class="c0"><span title="Avg 12µs">36µs</span></td><td class="c1">3</td><td class="c3">17µs</td><td class="s"> printf $format, @$_;<div class="calls"><div class="calls_out"> # spent 17µs making 3 calls to <a href="Benchmark-pm-27-line.html#Benchmark__CORE_prtf">Benchmark::CORE:prtf</a>, avg 6µs/call</div></div></td></tr>
<tr><td class="h"><a name="1038"></a>1038</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="1039"></a>1039</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1040"></a>1040</td><td class="c3">1</td><td class="c0"><span title="Avg 7µs">7µs</span></td><td></td><td></td><td class="s"> return \@rows ;</td></tr>
<tr><td class="h"><a name="1041"></a>1041</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="1042"></a>1042</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1043"></a>1043</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="1044"></a>1044</td><td class="c3">1</td><td class="c0"><span title="Avg 11µs">11µs</span></td><td></td><td></td><td class="s">1;</td></tr>
<tr><td class="s"><a name=""></a> </td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="Benchmark__CORE_prtf"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 17µs within Benchmark::CORE:prtf which was called 3 times, avg 6µs/call:
# 3 times (17µs+0s) by Benchmark::cmpthese at <a href="Benchmark-pm-27-line.html#1037">line 1037</a>, avg 6µs/call</div></div>sub Benchmark::CORE:prtf; # opcode<br /> </td></tr>
<tr><td class="h"><a name="Benchmark__CORE_sort"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 7µs within Benchmark::CORE:sort which was called 3 times, avg 2µs/call:
# once (4µs+0s) by Benchmark::cmpthese at <a href="Benchmark-pm-27-line.html#924">line 924</a>
# once (2µs+0s) by Benchmark::timethese at <a href="Benchmark-pm-27-line.html#856">line 856</a>
# once (1µs+0s) by Benchmark::cmpthese at <a href="Benchmark-pm-27-line.html#1012">line 1012</a></div></div>sub Benchmark::CORE:sort; # opcode<br /> </td></tr>
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