root / plugins / system / cpu_ @ a3d90c8f
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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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|
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PLUGINBASE=$(basename $0) |
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|
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emit_config() |
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{
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cat <<EOF |
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graph_title CPU usage $1 |
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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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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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EOF |
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} |
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|
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CPUS=$(grep '^cpu[0-9]' /proc/stat | cut -d ' ' -f 1) |
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|
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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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emit_config $cpu |
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done |
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|
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exit 0 |
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fi |
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|
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emit_values() |
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{
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while read key user nice system idle iowait irq softirq steal guest guest_nice |
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do |
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[ "$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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|
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# Values |
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echo multigraph $PLUGINBASE |
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emit_values cpu |
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|
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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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|
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exit 0 |