#!/bin/sh

# Graphs the number of running and waiting jobs, as well as when they
# are submitted.
#
# Tested with Son of Gridengine.

: <<=cut

=head1 NAME

sge_job_stats - Munin plugin to monitor jobs submitted and executed on a Grid
Engine installation

=head1 APPLICABLE SYSTEMS

Any system with a qstat command that behaves like the one found in Son of
GridEngine.

=head1 CONFIGURATION

The environment variable SGE_SETTINGS can be set to point to an SGE
"settings.sh" file. It defaults to /opt/sge/default/common/settings.sh.

=head1 AUTHOR

Wouter Verhelst <w@uter.be>

=cut

if [ "$1" = "config" ]
then
	echo graph_title SGE gridengine jobs
	echo graph_vlabel count
	echo graph_category processes
	echo running.label Running jobs
	echo running.type GAUGE
	echo running.draw AREA
	echo waiting.label Queued jobs
	echo waiting.type GAUGE
	echo waiting.draw STACK
	echo maxnum.label Submitted jobs
	echo maxnum.type DERIVE
	echo maxnum.draw LINE2
	echo maxnum.min 0

	exit 0
fi

SGE_SETTINGS=${SGE_SETTINGS:-/opt/sge/default/common/settings.sh}

. $SGE_SETTINGS

qstat -u '*' | awk '
	BEGIN{maxnum = 0; running = 0; waiting = 0}
	/^ /{
		maxnum = (maxnum > $1 ? maxnum : $1);
		if ( $5 == "r" ) {
			running += 1;
		} else {
			waiting += 1;
		}
	}
	END { printf("running.value %d\nwaiting.value %d\nmaxnum.value %d\n", running, waiting, maxnum); }'