linux-kernel - [PATCH v2 0/4] enhance compaction success rate

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Date:	Fri, 30 Jan 2015 21:34:08 +0900
From:	Joonsoo Kim <js1304@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Vlastimil Babka <vbabka@...e.cz>, Mel Gorman <mgorman@...e.de>,
	David Rientjes <rientjes@...gle.com>,
	Rik van Riel <riel@...hat.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH v2 0/4] enhance compaction success rate

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 compaction success rate (%) are

Base	Patch-1 Patch-2 Patch-3	Patch-4
18.47	27.13   31.82	--	42.20

Note: Base version is tested in v1 and the others are tested freshly.
Test is perform based on next-20150103 and Vlastimil's stealing logic
patches due to current next's unstablility.
Patch-3 isn't tested since there is no functional change.

Joonsoo (3):
  mm/compaction: stop the isolation when we isolate enough freepage
  mm/page_alloc: separate steal decision from steal behaviour part
  mm/compaction: enhance compaction finish condition

Joonsoo Kim (1):
  mm/compaction: fix wrong order check in compact_finished()

 include/linux/mmzone.h |  3 +++
 mm/compaction.c        | 47 ++++++++++++++++++++++++++++++++++++++---------
 mm/internal.h          |  1 +
 mm/page_alloc.c        | 50 ++++++++++++++++++++++++++++++++------------------
 4 files changed, 74 insertions(+), 27 deletions(-)

-- 
1.9.1

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