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#!/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 2004/12/09 22:12:56 jimmyo
# Added "graph_period" option, to make "graph_sums" usable.
#
# Revision 1.7 2004/11/21 00:17:12 jimmyo
# Changed a lot of plugins so they use DERIVE instead of COUNTER.
#
# Revision 1.6 2004/05/20 13:57:12 jimmyo
# Set categories to some of the plugins.
#
# Revision 1.5 2004/05/16 12:34:26 jimmyo
# Added "info"-fields to linux/cpu and linux/load plugins, to demonstrate how it works.
#
# Revision 1.4 2004/05/06 21:39:54 jimmyo
# Added plugin acpi, contributed by Alexandre Dupouy.
#
# 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 2004/01/31 19:56:37 jimmyo
# Linux/cpu now graphs all values on a 2.6 kernel (Deb#227946).
#
# Revision 1.1 2004/01/02 18:50:01 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 1.2 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 [ -r /proc/stat ]; then
echo yes
exit 0
else
echo no
exit 1
fi
fi
extinfo=""
if (`egrep '^cpu +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+' /proc/stat 2>/dev/null >/dev/null`)
then
extinfo="iowait irq softirq"
fi
if [ "$1" = "config" ]; then
NCPU=`expr \`grep '^cpu. ' /proc/stat | wc -l\` - 1`
PERCENT=`expr $NCPU '*' 100`
if [ "$scaleto100" = "yes" ]; then
graphlimit=100
else
graphlimit=$PERCENT
fi
SYSWARNING=`expr $PERCENT '*' 30 / 100`
SYSCRITICAL=`expr $PERCENT '*' 50 / 100`
USRWARNING=`expr $PERCENT '*' 80 / 100`
echo 'graph_title CPU usage'
echo "graph_order system user nice idle" $extinfo
echo "graph_args --base 1000 -r --lower-limit 0 --upper-limit $graphlimit"
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.min 0'
echo 'system.type DERIVE'
echo "system.warning $SYSWARNING"
echo "system.critical $SYSCRITICAL"
echo "system.info CPU time spent by the kernel in system activities"
echo 'user.label user'
echo 'user.draw STACK'
echo 'user.min 0'
echo 'user.max 5000'
echo "user.warning $USRWARNING"
echo 'user.type DERIVE'
echo 'user.info CPU time spent by normal programs and daemons'
echo 'nice.label nice'
echo 'nice.draw STACK'
echo 'nice.min 0'
echo 'nice.max 5000'
echo 'nice.type DERIVE'
echo 'nice.info CPU time spent by nice(1)d programs'
echo 'idle.label idle'
echo 'idle.draw STACK'
echo 'idle.min 0'
echo 'idle.max 5000'
echo 'idle.type DERIVE'
echo 'idle.info Idle CPU time'
if [ "$scaleto100" = "yes" ]; then
echo "system.cdef system,$NCPU,/"
echo "user.cdef user,$NCPU,/"
echo "nice.cdef nice,$NCPU,/"
echo "idle.cdef idle,$NCPU,/"
fi
if [ ! -z "$extinfo" ]
then
echo 'iowait.label iowait'
echo 'iowait.draw STACK'
echo 'iowait.min 0'
echo 'iowait.max 5000'
echo 'iowait.type DERIVE'
echo 'iowait.info CPU time spent waiting for I/O operations to finish'
echo 'irq.label irq'
echo 'irq.draw STACK'
echo 'irq.min 0'
echo 'irq.max 5000'
echo 'irq.type DERIVE'
echo 'irq.info CPU time spent handling interrupts'
echo 'softirq.label softirq'
echo 'softirq.draw STACK'
echo 'softirq.min 0'
echo 'softirq.max 5000'
echo 'softirq.type DERIVE'
echo 'softirq.info CPU time spent handling "batched" interrupts'
if [ "$scaleto100" = "yes" ]; then
echo "iowait.cdef iowait,$NCPU,/"
echo "irq.cdef irq,$NCPU,/"
echo "softirq.cdef softirq,$NCPU,/"
fi
fi
exit 0
fi
if [ ! -z "$extinfo" ]
then
awk '/^cpu / { print "user.value " $2 "\nnice.value " $3 "\nsystem.value " $4 "\nidle.value " $5 "\niowait.value " $6 "\nirq.value " $7 "\nsoftirq.value " $8 }' < /proc/stat
else
awk '/^cpu / { print "user.value " $2 "\nnice.value " $3 "\nsystem.value " $4 "\nidle.value " $5 }' < /proc/stat
fi
|
