On Mon, Apr 16, 2018 at 11:10:46PM +0300, Kapetanakis Giannis wrote: > On 16/04/18 18:40, Claudio Jeker wrote: > > > >>really depends on the KVM/linux version > >> > >Don't forget to set "options kvm-intel preemption_timer=0" for modprobe on > >newer linux kernels. After that it seems to work nicely. > > > > This module option (according to lists) is about timing issues with kvm and > obsd. > Does it affect performance as well?
It affects stability (sometimes VM hang because the clock interrupts don't work correctly) which is a big performace killer. Also for me stat clock was not running so there was no way to know what CPU load the VM has. > which kernel? I see it for sure on a 4.14 kernel. Guess more affected. -- :wq Claudio