Re: [git pull] scheduler fixes

Avi Kivity
2009-01-18T09:21:51Z

Avi Kivity wrote:
> Ingo Molnar wrote:
>> Can you reproduce those latencies? We didnt get similar reports from
>> elsewhere so there seems to be a KVM angle.
>>
>
> A simple test running 10 idle guests over 4 cores doesn't reproduce
> (2.6.29-rc). However we likely need a more complicated setup.
>
> Kevin, any details about your setup? What are the guests doing? Are
> you overcommitting memory (is the host swapping)?
>

If the host load is low enough, it may be worthwhile to repeat with
-no-kvm. It's significantly different from kvm (much higher cpu load,
and less tasks involved), but if the problem recurs, we know it's a pure
sched issue.

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