Re: [PATCH 4/4] mm: numa: Do not mark PTEs pte_numa when splitting huge pages

[Sasha Levin]

On 10/02/2014 03:07 PM, Kirill A. Shutemov wrote:
> On Thu, Oct 02, 2014 at 12:03:58PM -0700, Linus Torvalds wrote:
>> > On Thu, Oct 2, 2014 at 11:58 AM, Sasha Levin <sasha.levin@xxxxxxxxxx> wrote:
>>> > >
>>> > > You've also mentioned that while I can tell you if nothing dies, I can't
>>> > > really tell you if everything is working well. Is there a reasonable way
>>> > > to easily say if NUMA is working properly? Even something that would just
>>> > > tell me "your NUMA balancing seems to be sane" would be good.
>> > 
>> > So not having a NUMA machine (and not really wanting one), I can't
>> > really test things like the migration even *working*.
> I believe Sasha uses fakenuma in his KVM for that.

That's true. You can impose arbitrary configurations on your kernel even without your
hardware telling you to...


Thanks,
Sasha
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