[Pkg-libvirt-maintainers] Bug#700445:

[Sam Williams]

Answering to myself: the taskset needs to be applied to all guest threads, not just the main process:ps -L -C kvm|awk '/kvm/ {print $2}'| xargs -n1 taskset -c -p 0-7

Thanks to Daniele for the info! The actual bug is because of certain AMD processors group cores in different NUMAs and  the calculation of cores changed in libvirt. Newer libvirt should have this fixed. More discussion about the issue can be found e.g. here: https://bugzilla.redhat.com/show_bug.cgi?id=833425 		 	   		  
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