[Xen-devel] confusions on monitoring VM cpu usage in Xen hypervisor

["=?gb18030?b?Q2hhcmxlcw==?=" <xiezhenjiang@xxxxxxxxxxx>]

Hi everyone, I¡®m trying to monitor the VM CPU usage in xen hypervisor and use 
the VM CPU usage 
information in Xen's Credit Scheduler. I googled it, and find that most 
references about this topic is monitoring the VM CPU usage information in 
Domain-0 while not in the Xen hypervisor.
I'm now blocking at how to determine the state of vCPU, My understanding is 
that vCPU running on a physical CPU doesn't mean it really consumes CPU cycles, 
so I could determine the whether vCPU is consuming CPU cycles or not? So could 
you please give me some advice.

Thank you very much!
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