"cpu" plugin
The cpu-plugin
collects the amount of time spent by the
CPU in various states, most
notably user, system
and idle.
Data sources
The time is measured in number of "jiffies" spent in each state. The values are counted from system boot. A "jiffy" is usually beween 4ms and 10ms.
user(counter, min 0)- Time spent doing work for the user.
nice(counter, min 0)- Time spent being "nice" (doing low priority tasks).
syst(counter, min 0)- Time spent in the operating system. This includes interrupt handlers.
idle(counter, min 0)- Time spent "idle", i. e. not doing anything useful other than heating the room.
wait(counter, min 0)- Time spent waiting for an IO-oparation to complete.
Filename
cpu-instance.rrd
Example graph
Dependencies
- Linux
/proc-Filesystem
- Solaris
kstat_read(3KSTAT)
- FreeBSD
sysctlbyname(3)