Re: kvm somehow exempt from frequency scaling?

Avi Kivity
2007-04-24T08:47:17Z

David Abrahams wrote:
>>>> I'll try to reproduce this locally, right now I'm completely bewildered
>>>> by this.
>>>>
>>> FYI, if I listen to the radio in windows media player, I don't see the
>>> effect. KVM will take 18% or so of the CPU even when not on a visible
>>> workspace.
>>>
>> And since ubuntu's update to kvm 1:16-1ubuntu2, I can't see the effect
>> at all, no matter what I do.
>>
>
> I take it back. If I launch kvm and switch to another desktop
> immediately, I can come back a seemingly arbitrary amount of time
> later and it will not have finished booting. It also never seems to
> force the CPU frequency to 100%. AFAICT I am seeing exactly what I
> was seeing before.
>

Argh.

Can you try the following experiments (independently):

- run kvm with the '-no-rtc' option

- disable compiz (or beryl). I think the menu item is called 'Desktop
Effects'.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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