[libvirt] Can not get domain's cpu time

Jason Wong hcwong at clustertech.com
Thu Jul 16 09:15:23 UTC 2009


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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>   
virDomainGetVcpus() is NOT supported by KVM

For driver support status, please refer to http://libvirt.org/hvsupport.html




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