Re: High vm-exit latencies during kvm boot-up/shutdown

Dong, Eddie
2007-10-23T01:05:31Z

kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org wrote:
> Hi,
>
> I'm seeing fairly high vm-exit latencies (300-400 us) during and only
> during qemu/kvm startup and shutdown on a Core2 T5500 in 32-bit mode.
> It's most probably while the VM runs inside bios code. During the rest
> of the time, while some Linux guest is running, the exit latencies are
> within microseconds, thus perfectly fine for the real-time scenarios
> I have in mind.

How is this time spent? All in Qemu?
Usually a kernel only VM Exit cost less than 1us.
Eddie