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

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