On 04/18/2013 03:14 PM, Stefan Hajnoczi wrote: Dear Stefan, > 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. > > You may want to disable ksmd on the host since you only have 1 guest, > but I doubt that will fix the main problem: > > 11:25:27 100 0.00 7.89 0.00 7.89 7 ksmd We did that earlier today. No difference. > > 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. Best regards, Martin > 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
