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Re: [libvirt] Can not get domain's cpu time



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
> >
> >--
> >Libvir-list mailing list
> >Libvir-list 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That's actually out of date :-(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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