2014-03-06 12:34:01 +01:00
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#! /bin/sh
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# Multigraph CPU plugin
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# It shows a global cpu graph, and you can drill down per-core
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PLUGINBASE=$(basename $0)
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emit_config()
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{
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2014-03-06 15:42:55 +01:00
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cat <<EOF
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graph_title CPU usage $1
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2014-03-06 12:34:01 +01:00
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graph_order system user nice idle iowait irq softirq
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graph_vlabel %
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graph_scale no
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graph_info This graph shows how CPU time is spent.
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graph_category system
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graph_period second
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system.label system
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system.draw AREA
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system.min 0
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system.type DERIVE
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system.info CPU time spent by the kernel in system activities
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user.label user
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user.draw STACK
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user.min 0
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user.type DERIVE
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user.info CPU time spent by normal programs and daemons
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nice.label nice
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nice.draw STACK
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nice.min 0
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nice.type DERIVE
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nice.info CPU time spent by nice(1)d programs
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idle.label idle
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idle.draw STACK
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idle.min 0
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idle.type DERIVE
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idle.info Idle CPU time
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iowait.label iowait
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iowait.draw STACK
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iowait.min 0
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iowait.type DERIVE
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iowait.info CPU time spent waiting for I/O operations to finish when there is nothing else to do.
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irq.label irq
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irq.draw STACK
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irq.min 0
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irq.type DERIVE
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irq.info CPU time spent handling interrupts
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softirq.label softirq
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softirq.draw STACK
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softirq.min 0
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softirq.type DERIVE
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softirq.info CPU time spent handling "batched" interrupts
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steal.label steal
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steal.draw STACK
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steal.min 0
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steal.type DERIVE
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steal.info The time that a virtual CPU had runnable tasks, but the virtual CPU itself was not running
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guest.label guest
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guest.draw STACK
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guest.min 0
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guest.type DERIVE
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guest.info The time spent running a virtual CPU for guest operating systems under the control of the Linux kernel.
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2014-03-09 19:25:57 +01:00
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guest_nice.label guest
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guest_nice.draw STACK
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guest_nice.min 0
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guest_nice.type DERIVE
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guest_nice.info The time spent running a virtual CPU for niced guest operating systems under the control of the Linux kernel.
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2014-03-06 12:34:01 +01:00
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EOF
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}
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CPUS=$(grep '^cpu[0-9]' /proc/stat | cut -d ' ' -f 1)
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if [ "$1" = "config" ]
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then
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echo multigraph $PLUGINBASE
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emit_config
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# Emit one subgraph per core
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for cpu in $CPUS
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do
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echo multigraph $PLUGINBASE.$cpu
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2014-03-06 15:42:55 +01:00
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emit_config $cpu
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2014-03-06 12:34:01 +01:00
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done
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exit 0
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fi
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emit_values()
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{
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2014-03-09 19:25:57 +01:00
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while read key user nice system idle iowait irq softirq steal guest guest_nice
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2014-03-06 12:34:01 +01:00
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do
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[ "$key" != "$1" ] && continue
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cat <<EOF
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system.value $system
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user.value $user
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nice.value $nice
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idle.value $idle
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iowait.value $iowait
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irq.value $irq
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softirq.value $softirq
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steal.value $steal
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guest.value $guest
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EOF
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done < /proc/stat
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}
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# Values
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echo multigraph $PLUGINBASE
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emit_values cpu
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# Emit one subgraph per core
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for cpu in $CPUS
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do
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echo multigraph $PLUGINBASE.$cpu
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emit_values $cpu
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done
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exit 0
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