[libvirt-users] What does cpu_time returned by virDomainGetCPUStats mean?
Zhihua Che
zhihua.che at gmail.com
Mon Apr 16 12:51:56 UTC 2012
在 2012年4月16日 下午7:56,RaSca <rasca at miamammausalinux.org> 写道:
> Il giorno Lun 16 Apr 2012 13:37:24 CEST, Zhihua Che ha scritto:
> [...]
>> How can I get the CPU usage of the domain?
> [...]
>
> As Daniel told me two days ago, cpuTime shows the absolute CPU time
> consumed since boot. To get % CPU time, take two readings 'n' seconds
> apart and calculate the delta between them.
>
I guess so, but what is the precision of the returned cpu time. I
don't think it's 1/HZ as host machine is according to my experiments.
Thanks for your reply.
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