On 07/17/2012 04:50 PM, Orion Poplawski wrote: > While staring at top on my SL6 kvm server waiting for it to crash, I > noticed that my idle Fedora kvm guests appear to be consuming between > 8-12% cpu while my idle SL6 guests appear to be consuming between 0.3-2% > cpu as shown in the qemu-kvm processes in top. In fact I have a Fedora > 17 instance running now with nothing but kernel processes and the > qemu-kvm process still shows it using 7-8% cpu. > > Does anyone have any insight as to why this would be the case?
Could it be an issue of vnc vs. spice? It may help if you provide the 'virsh dumpxml $dom' of the two guests in question, to point out if any difference in configuration may be responsible. Also bear in mind that the virt stack strives for guest ABI compatibility - so a guest created 2 years ago will still use the defaults from 2 years ago, even if the defaults have since improved in the meantime for a guest created today. You can rewrite the XML, generally with no ill effects to a Linux guest, but at risk of having to revalidate a Windows guest (hence why the virt stack strives for stable ABI instead of auto-rewriting your guests to use latest-and-greatest defaults). -- Eric Blake [email protected] +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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