Re: Cpu steal

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On Thu, May 23, 2024, Y.G Kumar wrote:
> Hi,
> 
> Is there a way of measuring cpu steal time of a guest from the
> hypervisor ? Does it give accurate information ? What are some of the
> effective ways to find out the steal time from outside the vm

Yes and no.  KVM's PV steal time information isn't exposed anywhere, but only
because it's simply a reflection of the task's run_delay that's reported in
/proc/PID/schedstat (second column).

I assume there are tools that translate schedstat into human-readable information,
and/or do analysis on the info, but I don't have personal experience with any such
tools.  If you need more help, I recommend pinging sched folks, as this is really
a scheduler question, not a KVM question.




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