Following section indicates that CPU tuning with <period> and <quota>
tags are only supported for QEMU
http://libvirt.org/formatdomain.html#elementsCPUTuning
I see this commit in libvirt.git:
commit d9724a81b3c53a40f45bf76067a976cce73ed278
Author: Daniel P. Berrange <berrange(a)redhat.com>
Date: Thu Nov 10 12:16:26 2011 +0000
Add support for CPU quota/period to LXC driver
and the code seems to be included in libvirt-0.9.10-21.el6.
I have not had a chance to try on latest libvirt yet, but is it just
that the CPUTuning section on the above wiki needs an update ?