On Thu, Jul 16, 2009 at 05:15:23PM +0800, Jason Wong wrote:
Zhang Qian wrote:
>Hi,
>
>I have a domain running in my KVM box, and try to get its vcpu info by
>calling virDomainGetVcpus(), but it seems the cpu time returned to me
>is always 0.
>
>And I also found virsh can not get the CPU time too:
>$ virsh vcpuinfo aaa
> VCPU: 0
> CPU: 0
> State: running
> CPU Affinity: yy
>
>I tried the same virsh command in my Xen box for a running domain, the
>output is:
>$ virsh vcpuinfo test1
> VCPU: 0
> CPU: 1
> State: running
> CPU time: 322.1s <----- I need this
> CPU Affinity: yy
>
>As you see, for KVM domain, there is no "CPU time".
>But it's very strange that virt-manager can show the right CPU usage
>for my running domain, I do not know where virt-manger gets it.
>
>Can anyone tell me which libvirt API should I call to get the CPU time?
>Thanks!
>
>
>Regards,
>Qian
>
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>Libvir-list(a)redhat.com
>https://www.redhat.com/mailman/listinfo/libvir-list
>
virDomainGetVcpus() is NOT supported by KVM
It is supported, but we don't fill in all the fields :-( Basically it
only gives youthe vCPU <-> pCPU affinity info at this time
For driver support status, please refer to
http://libvirt.org/hvsupport.html
That's actually out of date :-(
Daniel
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