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Date:	Mon, 16 May 2016 10:11:26 +0200
From:	Michal Hocko <>
To:	Vlastimil Babka <>
Cc:, Andrew Morton <>,
	Joonsoo Kim <>,
	Rik van Riel <>,
	David Rientjes <>,
	Mel Gorman <>,
	Johannes Weiner <>,
	Tetsuo Handa <>,,
	Linus Torvalds <>
Subject: Re: [RFC 11/13] mm, compaction: add the ultimate direct compaction

On Mon 16-05-16 09:17:11, Vlastimil Babka wrote:
> On 05/13/2016 03:38 PM, Michal Hocko wrote:
> > On Tue 10-05-16 09:36:01, Vlastimil Babka wrote:
> > > such as hugetlbfs allocations, and reduce some corner-case OOM's for non-costly
> > > allocations.
> > 
> > My testing has shown that even with the current implementation with
> > deferring, skip hints and cached positions had (close to) 100% success
> > rate even with close to OOM conditions.
> Hmm, I thought you at one point said that ignoring skip hints was a large
> improvement, because the current resetting of them is just too fuzzy.

Not in the hugetlb test. But you are right that skip hints resulted in
really fuzzy behavior.
Michal Hocko

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