#!/bin/sh
#
# Plugin to monitor CPU usage.
#
# Usage: Place in /etc/munin/node.d/ (or link it there  using ln -s)
#
# Parameters understood:
#
# 	config   (required)
# 	autoconf (optional - used by munin-config)
#
# $Log$
# Revision 1.8.2.3  2005/02/03 13:28:50  lupe
# correct field.info
#
# Revision 1.8.2.2  2005/01/28 14:51:22  lupe
# Add graph_info and some filed.info
#
# Revision 1.10  2005/01/28 14:47:31  lupe
# Add graph_info and some filed.info
#
# Revision 1.9  2005/01/25 08:48:28  lupe
# Correct multi-CPU bugs
#
# Revision 1.8.2.1  2005/01/25 09:22:52  lupe
# Correct multi-CPU bugs
#
# Revision 1.8  2004/12/09 22:12:55  jimmyo
# Added "graph_period" option, to make "graph_sums" usable.
#
# Revision 1.7  2004/11/28 09:43:54  lupe
# 6-CURRENT support
#
# Revision 1.6  2004/11/21 00:16:56  jimmyo
# Changed a lot of plugins so they use DERIVE instead of COUNTER.
#
# Revision 1.5  2004/05/20 19:02:36  jimmyo
# Set categories on a bunch of plugins
#
# Revision 1.4  2004/05/09 19:18:35  jimmyo
# Added support for scaleto100-parameter (patch from Lupe Christoph).
#
# Revision 1.3  2004/02/18 16:39:36  jimmyo
# Turned off scaling of values for cpu-graphs (no more nano-percentages).
#
# Revision 1.2  2004/02/01 18:59:54  lupe
# FreeBSD 5 compatibility.
#
# Revision 1.1  2004/01/02 18:50:00  jimmyo
# Renamed occurrances of lrrd -> munin
#
# Revision 1.1.1.1  2004/01/02 15:18:07  jimmyo
# Import of LRRD CVS tree after renaming to Munin
#
# Revision 1.3  2003/11/07 17:43:16  jimmyo
# Cleanups and log entries
#
#
#
# Magic markers - optional - used by installation scripts and
# munin-config:
#
#%# family=auto
#%# capabilities=autoconf



if [ "$1" = "autoconf" ]; then
	if [ -x /sbin/sysctl ]; then
		/sbin/sysctl kern.cp_time > /dev/null
		if [ $? = "0" ]; then
			echo yes
			exit 0
		else
			echo no
			exit 1
		fi
	else
		echo no
		exit 1
	fi
fi

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

	echo 'graph_title CPU usage'
	echo 'graph_order system interrupt user nice idle'
	echo "graph_args --base 1000 -r --lower-limit 0 --upper-limit 100 "
	echo 'graph_vlabel %'
	echo 'graph_scale no'
	echo 'graph_info This graph shows how CPU time is spent.'
	echo 'graph_category system'
	echo 'graph_period second'
	echo 'system.label system'
	echo 'system.draw AREA'
	echo 'system.max 5000'
	echo 'system.type DERIVE'
	echo 'system.min 0'
#	echo "system.warning $SYSWARNING" 
#	echo "system.critical $SYSCRITICAL" 
	echo 'system.info CPU time spent by the kernel in system activities'
	echo 'interrupt.label interrupt'
	echo 'interrupt.draw STACK'
	echo 'interrupt.max 5000'
#	echo "interrupt.warning $INTWARNING"
	echo 'interrupt.type DERIVE'
	echo 'interrupt.min 0'
	echo 'interrupt.info CPU time spent by the kernel processing interrupts'
	echo 'user.label user'
	echo 'user.draw STACK'
	echo 'user.max 5000'
#	echo "user.warning $USRWARNING"
	echo 'user.type DERIVE'
	echo 'user.info CPU time spent by normal programs and daemons'
	echo 'user.min 0'
	echo 'nice.label nice'
	echo 'nice.draw STACK'
	echo 'nice.max 5000'
	echo 'nice.type DERIVE'
	echo 'nice.info CPU time spent by nice(1)d programs'
	echo 'nice.min 0'
	echo 'idle.label idle'
	echo 'idle.draw STACK'
	echo 'idle.max 5000'
	echo 'idle.type DERIVE'
	echo 'idle.info Idle CPU time'
	echo 'idle.min 0'
	exit 0
fi

/sbin/sysctl -n kern.cp_time | awk -F ',' '{ print "user.value " $1 "\nnice.value " $2 "\nsystem.value " $3 "\ninterrupt.value " $4 "\nidle.value " $5 }'