On Thu, Apr 18, 2013 at 03:27:45PM +0200, Martin Wawro wrote: > On 04/18/2013 03:14 PM, Stefan Hajnoczi wrote: > > No answer but some more questions. > > > > Regarding the kvm_stat output, the exits are caused by 68,000 > > pagefaults/second (pf_fixed). Perhaps someone can explain what this > > means? > > > > The host has 8 cores, the guest has 7. Host pidstat shows qemu-kvm > > consuming 263.9% CPU: > > > > 11:25:27 4017 11.13 34.65 218.12 263.90 7 qemu-kvm > > > > Why is the guest not getting more than 3 CPUs since the host is otherwise idle? > > If one waits a little longer, top shows all 7 cores under utilization > (700%). Unfortunately > we have to be quick with the reboots during daytime, because the system > is in > production use and we have not decided yet to completely replace it. BTW does the host CPU support Intel Extended Page Tables or AMD Nested Page Tables? grep 'npt\|ept' /proc/cpuinfo (I think the kvm_stat is saying EPT/NPT are not in use) > > > > For details, see https://www.kernel.org/doc/Documentation/vm/ksm.txt. > > > > What is the python process on the host doing? Is it poking libvirt? > > > > 11:25:27 4558 4.66 3.55 0.00 8.21 7 python > > 11:25:27 3659 3.99 4.55 0.00 8.54 7 libvirtd > > That is virt-manager.py, exactly doing that. Okay, I was wondering if something is causing libvirt and maybe QEMU to act strangely. If its just virt-manager then it's probably not the issue. Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
