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Top Forums Shell Programming and Scripting Waiting for an arbitrary background process (limiting number of jobs running) Post 302390854 by dpc.ucore.info on Friday 29th of January 2010 08:10:27 AM
Old 01-29-2010
I'm not a perl expert, but you don't seem to loop through the all pids and check the values.

You should loop through all pids with non-blocking waitpid and it the process is not running - spawn a new one in place of the old one.

It seems to me that you are now waiting for the first pid in queue and when it finishes - sprawning another one. While quite good, the situation may be that from the first 10 pids the 2-9 have ended and 1 is working very long. You will end up with only one worker running for most of the time, which I guess you've tried to avoid.
 

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CHECK_GEARMAN(8)					  System Administration Utilities					  CHECK_GEARMAN(8)

NAME
check_gearman - Nagios service check to monitor the gearman job server DESCRIPTION
usage: check_gearman [ -H=<hostname>[:port] ] [ -t=<timeout> ] [ -w=<jobs warning level> ] default: 10 [ -c=<jobs critical level> ] default: 100 [ -W=<worker warning level> ] default: 25 [ -C=<worker critical level> ] default: 50 [ -q=<queue> ] to send a test job: [ -u=<unique job id> ] default: check [ -s=<send text> ] [ -e=<expect text> ] [ -a send async ] will ignore -e [ -h print help ] [ -v verbose output ] [ -V print version ] - You may set thresholds to 0 to disable them. - Thresholds are only for server checks, worker checks are availability only perfdata format when checking job server: |'queue waiting'=current waiting jobs;warn;crit;0 'queue running'=current running jobs 'queue worker'=current num worker;warn;crit;0 Note: set your pnp RRD_STORAGE_TYPE to MULTIPLE to support changeing numbers of queues. see http://docs.pnp4nagios.org/de/pnp-0.6/tpl_custom for detailed information perfdata format when checking mod gearman worker: |worker=10 jobs=1508c Note: Job thresholds are per queue not totals. EXAMPLES
Check job server: %>./check_gearman -H localhost -q host check_gearman OK - 0 jobs running and 0 jobs waiting. Version: 0.14|'host_waiting'=0;10;15;0 'host_running'=0 'host_worker'=3;5;10;0 Check worker: %> ./check_gearman -H <job server hostname> -q worker_<worker hostname> -t 10 -s check check_gearman OK - host has 5 worker and is working on 0 jobs|worker=5 jobs=96132c SEE ALSO
The Mod Gearman documentation is available in /usr/share/doc/mod-gearman/README.html check_gearman 1.3.6-1 July 2012 CHECK_GEARMAN(8)
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