Revision history for Perl extension Schedule::Load
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* Schedule::Load 3.060 2008/12/08
*** Quickly service requests when a reporter is responding very slowly.
*** Add to "rschedule status" the most recent slchoosed syslog messages.
*** Add to "rschedule status" the slreporting hostname.
*** Fix rschedule sort warnings when reporter is going up and down.
* Schedule::Load 3.052 2008/03/12
*** All rschedule reports now have columns that expand to fit the contents.
*** Include requesting hostname in "rschedule loads".
*** Ignore, rather than exit Chooser, when reporter has bad Storable module.
**** Improve Chooser performance with 100s of hosts under heavy network loads.
* Schedule::Load 3.051 2007/05/25
** Use hold_load so hosts don't exceed their load_limit. [Bryce Denney]
*** Added slchoosed_watchd utility daemon, for detecting slchoosed failures.
*** Added slreportd dynamic_cache_timeout parameter.
**** Documented requirement that match_cb allow caching (vs rating_cb).
**** Made 'rschedule status' DELAY column more consistently accurate.
**** Various performance enhancements.
* Schedule::Load 3.050 2007/04/03
*** Rschedule status now shows version numbers of the daemons.
**** A requested hold_load or fixed_load of -1 indicates
to grab all CPUs on that host.
**** Reduce reporter network traffic under slow response times.
**** Fix --help to use Pod::Usage instead of depreciated pod2text.
* Schedule::Load 3.040 2006/07/19
*** Added slrsh --summary option.
*** Added keep_idle_cpus option to reserve some CPUs for other jobs.
*** Added reporter load_pctcpu option to counteract low CPU% jobs.
When set, Schedule::Load::Host->fixed_load may now return a float.
*** Rschedule loads now includes percent memory usage.
**** Fake Reporters now include information on the originator of the request.
* Schedule::Load 3.030 2006/04/13
*** Fix some hosts getting stuck with secondary chooser when primary server
goes up, down and up quickly.
**** Speed up slchoosed when prioritizing across hundreds of hosts.
* Schedule::Load 3.026 2006/03/02
**** Fix fake reporter showing incorrect process runtimes on Linux.
* Schedule::Load 3.025 2005/12/12
** Retry Schedule::Load::Hosts when switching between redundant servers.
**** Increase packet size between clients and servers.
**** Show slchoosed latencies in "rschedule status".
* Schedule::Load 3.024 2005/11/29
**** Fix hardcoded library prefix. [Sergey Skvortsov]
**** Fix slchoosed memory leak.
* Schedule::Load 3.023 2005/10/18
**** Fix version numbering. [Sergey Skvortsov]
* Schedule::Load 3.022 2005/10/13
*** Added host total_size and total_rss memory sizes. [Emil Kesler]
**** Added nice information to 'rschedule loads'.
* Schedule::Load 3.021 2005/04/27
** NEWS is now renamed Changes, to support CPAN indexing. [Offer Kaye]
*** Added rschedule --allow-reserved and --no-allow-reserved.
**** Init.d scripts now create the default rschedule directory. [Win Treese]
* Schedule::Load 3.020 2004/10/26
*** Slrsh now requires a "e"xit instead of a ctrl-C to exit.
*** Added rschedule --similar option for selecting hosts.
*** Added slreportd and choosed rating_mult option.
This is useful for derating Intel processors vs. AMD processors.
* Schedule::Load 3.010 2004/03/10
** Support detection of hyperthreaded systems.
*** Add physical_cpus host accessor, and show in rschedule hosts report.
* Schedule::Load 3.003 2004/01/27
*** Added RSCHLIB make variable so /usr/local/lib/rschedule
can be relocated for non-root installations. [Offer Kaye]
* Schedule::Load 3.002 2003/09/05
*** Added DELAY column in 'rschedule status' to show number of seconds
it is taking for a host to respond to a scheduler request.
This aids in debugging problems due to slow networks.
* Schedule::Load 3.001 2003/05/21
** This is a major release to add support for scheduling of
multiple resources at the same time, and to add a prioritized
list of waiters for each resource.
*** The slchoosed process must be restarted to match this package.
Slreportd processes are forward and backward compatible.
*** Added Schedule::Load::Hold for information on who needs a host.
*** Added Schedule::Load::ResourceReq for scheduling multiple requests.
*** Added rschedule holds command.
*** Added pid tracking of fixed_loads on fake reporters.
** Several interface items have been cleaned up.
This may break older programs, contact the author if this causes pain.
*** Schedule::Load::Schedule::hosts_of_class is depreciated.
Equivalent is hosts_match(classes=>{....}, allow_reserved=>1)
*** Night hours is depreciated. The default loading is now the
full clump, if you wish to use a smaller percentage, make a local
derived class. Likewise editing of the classes list to add
_night suffixes is removed. (This was never consistently applied.)
* Schedule::Load 2.104 2003/04/15
*** Added rschedule set_const function.
*** Added rschedule status function.
**** rloads --kill now takes signal name argument.
**** Reserve a machine with a error message if conflicting deamons
are running with the same hostname.
**** Fix 'rschedule classes' display with class numbers over 1 digit
* Schedule::Load 2.102 2002/09/24
*** Added rating_cb to scheduler to allow users to specify algorithm
for selecting best rated host for new loads. [James Messrie]
**** Fixed FakeReporter runtimes to be correct (host::times)
* Schedule::Load 2.100 2002/08/30
*** Rewrite of slpolice to support reservation warnings
*** Added match_cb to scheduler to allow users to specify functions
to select the appropriate hosts.
**** Socket reliability suggestions implemented.
* Schedule::Load 2.090 2002/08/01
** Track local pids with fake reporter, unless track_hosts=0 specified.
*** Allow multiple colon separated hostnames with --dhost option.
*** Added ping() method for determining if a server is up.
*** Changed default of 6 cpus during day to be 20% of clump.
This removes all "constant" numbers from the scheduler.
*** Added --hosts option to slrsh.
**** Fixed unreliable kill(0) to determine process death.
* Schedule::Load 1.8 2002/03/18
** Added fake reporting hosts, for management of non-local hosts.
*** Added --parallel option to slrsh
*** Added additional host command options to slrsh
* Schedule::Load 1.7 2001/12/11
*** Greatly improved chooser reliability when processes talking to it
CTRL-C or otherwise go bonkers.
* Schedule::Load 1.6 2001/11/28
** Added slrsh command.
** Added Schedule::Host->idle_host_names and rschedule idle_host_names.
*** Hold_keys now allow hold_load, for setting the loading to other than 1.
*** Use ssh in place of rsh.
**** Allow optional --comment with rschedule reserve command.
* Schedule::Load 1.5 2001/02/13
**** Documentation updates.
* Schedule::Load 1.4 2000/11/30
** Added --dhost option to slchoosed
Specifying multiple slchoosed hostnames now provides a backup server
if the first server goes down. When the first server comes back up, it
will reset the backup server and take over processing.
*** Fixed bug which would choose always choose a host with one lightly busy
cpu over another with higher overall activity but free cpus.
* Schedule::Load 1.3 2000/11/03
** The port number now comes from a lookup of slchoosed in /etc/services
else uses 1752 if not found.
**** Fixed Linux bug causing high CPU usage (blocking read didn't block).
* Schedule::Load 1.2 2000/01/21
**** test.pl improvements: check for free port, use test store directory.
* Schedule::Load 1.1 2000/01/17
** First CPAN Release
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