#!/bin/sh

set -e

: << =cut

=head1 NAME

vmstat - Plugin to monitor the number of processes in io-sleep and
other wait states.

=head1 CONFIGURATION

No configuration

=head1 NOTES

Uses the command "vmstat"

=head1 AUTHOR

Unknown author

=head1 LICENSE

GPLv2

=head1 MAGIC MARKERS

 #%# family=auto
 #%# capabilities=autoconf

=cut

. "$MUNIN_LIBDIR/plugins/plugin.sh"

if [ "$1" = "autoconf" ]; then
	if ( vmstat 1 1 >/dev/null 2>&1 ); then
		echo yes
		exit 0
	else
		if [ $? -eq 127 ]; then
			echo "no (could not run \"vmstat\")"
			exit 0
		else
			echo "no (unknown vmstat return value $?)"
			exit 0
		fi
	fi
fi

if [ "$1" = "config" ]; then

	echo 'graph_title VMstat'
	echo 'graph_args --base 1000 -l 0'
	echo 'graph_vlabel process states'
	echo 'graph_category processes'
	echo 'wait.label running'
	echo 'wait.type GAUGE'
	echo 'wait.max 500000'
	echo 'sleep.label I/O sleep'
	echo 'sleep.type GAUGE'
	echo 'sleep.max 500000'
	print_warning wait
	print_warning sleep
	print_critical wait
	print_critical sleep
	exit 0
fi

vmstat 1 2 | awk '{wait = $1; sleep = $2} END { print "wait.value " wait "\nsleep.value " sleep }'