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SubjectRe: [PATCH 0/4] enhance compaction success rate
On Mon, Dec 08, 2014 at 10:16:34AM +0100, Vlastimil Babka wrote:
> On 12/08/2014 08:16 AM, Joonsoo Kim wrote:
> >This patchset aims at increase of compaction success rate. Changes are
> >related to compaction finish condition and freepage isolation condition.
> >
> > From these changes, I did stress highalloc test in mmtests with nonmovable
> >order 7 allocation configuration, and success rate (%) at phase 1 are,
> >
> >Base Patch-1 Patch-3 Patch-4
> >55.00 57.00 62.67 64.00
> >
> >And, compaction success rate (%) on same test are,
> >
> >Base Patch-1 Patch-3 Patch-4
> >18.47 28.94 35.13 41.50
>
> Did you test Patch-2 separately? Any difference to Patch 1?

I didn't test it separately. I guess that there is no remarkable
difference because it just slightly changes page stealing logic, not
compaction logic. Compaction success rate would not be affected by
patch 2, but, I will check it next time.

Thanks.


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