[Libvir] Question on acquiring cpuTime in struct _virDomainInfo

Hi everyone, using libvirt I'm trying to calculate cpu utilization of a node in percent. But sometimes values beyond 100.0% are being calculated. This is because a domain spend more time on a cpu than time is elapsed in the meantime. A short explanation of the way how cpu utilization is computed in my case: 1. - open two connections with conn_cur/conn_old = virConnectOpenReadOnly(NULL); 2. - get current time gettimeofday(&time_old, NULL); - get domain by id with dom_old = virDomainLookupByID(conn_old, id) - get domain information virDomainGetInfo(dom_old, &info_old); 3. - sleep a second 4. - doing same stuff like in 2. but with _cur 5. - compute cpu utilization by dividing used cputime by elapsed time and multiply with 100 Am I right if I suppose that cpuTime for _virDomainInfo structure will be directly acquired from the hypervisor in virDomainGetInfo (dom_old, &info_old) or is it already present with getting the domain itself? Is there any better solution of doing this, which is more precise? And another general question: The monitoring utility of xen, called xentop, provides also statistics about networking and vbds. Are there any plans to provide this values by libvirt in the future? Cheers, Jan