[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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