Re: [RFC] Paravirt timer for KVM

Dong, Eddie
2007-10-16T10:03:20Z

kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org wrote:
> Hollis Blanchard wrote:
>> That's a good point, but does PIT/HPET emulation show up as a hot
>> spot in any profiles? I think keeping the hypercall API as small as
>> feasible is a desirable design goal.
>>
>
> At the moment I think not. Even a dyntick kernel would only require a
> few thousands exits per second worst case.
>
Yes, the key issue is old PIT IRQ handler which is not very
virtualization
friendly.
Eddie