----- Original Message -----
From: "Christopher Pereira" <kripper@imatronix.cl> To: "Francesco Romani" <fromani@redhat.com> Cc: devel@ovirt.org Sent: Wednesday, April 29, 2015 12:21:25 PM Subject: Re: [ovirt-devel] libvirtError: unsupported configuration: timer hypervclock doesn't support setting of timer tickpolicy
[...]
Glad to see that hv_ optimization flags are being supported, since they boost Windows VM performance using inhouse MS Hypervisor optimizations.
[...] Then I'm afraid is just a bug, and this patch should help:
Ok. Any news about turning on all the "hv_*" flags [1] for Windows guests?
Except for the bug you hit, VDSM side is done. To trigger all the optimization, Engine needs to send the 'hypervEnable' config item set to 'true'. Because of this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1163828 this was disabled on Engine side for 3.5.x as workaround for an actual QEMU bug for window >= 8 (64 bit) and for windows server >= 2012 (64 bit). For 3.6.x we'll need to revert that patch. Meantime, you can just tune osinfo.properties locally and have the same result. Bests, -- Francesco Romani RedHat Engineering Virtualization R & D Phone: 8261328 IRC: fromani