[libvirt-users] cpuTimes and qemu-kvm on F13

[Matthew Farrellee]

http://libvirt.org/html/libvirt-libvirt.html#virDomainInfo
http://libvirt.org/html/libvirt-libvirt.html#virVcpuInfo

Both virDomainInfo and virVcpuInfo have a nanosecond cpuTime field. How 
do the two related to one another?

With some experiementing, it appears the virDomainInfo::cpuTime is equal 
to the host CPU time used by the qemu-kvm process for the domain. It 
also appears that the sum(virVcpuInfo::cpuTime) for a domain is not 
equal to the virDomainInfo::cpuTime. Is the virVcpuInfo::cpuTime how 
much host CPU time was spent simulating the vCPU? Making the difference 
between the sum and the virDomainInfo::cpuTime the overhead of qemu-kvm?

Does the relationship hold for other hypervisors?

Best,


matt