Re: [RFC][PATCH 0/9] rework KVM mmu_shrink() code

Avi Kivity
2010-06-17T08:40:32Z

On 06/16/2010 06:03 PM, Dave Hansen wrote:
> On Wed, 2010-06-16 at 11:38 +0300, Avi Kivity wrote:
>
>> On 06/15/2010 04:55 PM, Dave Hansen wrote:
>>
>>> These seem to boot and run fine. I'm running about 40 VMs at
>>> once, while doing "echo 3> /proc/sys/vm/drop_caches", and
>>> killing/restarting VMs constantly.
>>>
>>>
>> Will drop_caches actually shrink the kvm caches too? If so we probably
>> need to add that to autotest since it's a really good stress test for
>> the mmu.
>>
> I'm completely sure.

Yes, easily seen from the code as well.

> I crashed my machines several times this way
> during testing.
>

Hopefully only with your patches applied?

I'll try to run autotest from time to time with drop_caches running in
the background. Looks like an excellent way to stress out the mmu.

--
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