On 12/08/2011 11:44 AM, Eric Blake wrote: > On 12/07/2011 08:40 PM, Lai Jiangshan wrote: >> "virt-top -1" can call virDomainGetPcpusUsage() periodically and get >> the CPU activities per CPU. (still require virt-top site patch). >> >> virsh is also added a pcpuinfo command which calls virDomainGetPcpusUsage(), >> it gets information about the physic CPUs, such as the usage of >> CPUs, the current attached vCPUs. > > Meta-question - is this the time taken _by just the guest in question_ > on the host's physical CPU, or is it the cumulative CPU time taken by The time is used by the guest in question on the host's physical CPUs. per-domain and per physical CPU > all process on the physical CPU, in which case this would be better > named as virNodeGetCpusUsage()? And if it is per-domain, then what's > the difference between physical cpu usage and virtual cpu usage (that > is, can we even tell the overhead of the hypervisor, and should we be > exposing that overhead to the user)? > I did not catch your mean, could you explain more? Thanks, Lai -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list