From: Minchan Kim <minchan.kim@gmail.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>,
Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Christoph Lameter <cl@linux-foundation.org>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
David Rientjes <rientjes@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Rik van Riel <riel@redhat.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 07/11] Memory compaction core
Date: Wed, 24 Mar 2010 10:47:41 +0900 [thread overview]
Message-ID: <28c262361003231847q1e4b7c7agdf82c4b2e920ada4@mail.gmail.com> (raw)
In-Reply-To: <20100324100334.8d6f0739.kamezawa.hiroyu@jp.fujitsu.com>
On Wed, Mar 24, 2010 at 10:03 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@jp.fujitsu.com> wrote:
> On Tue, 23 Mar 2010 12:25:42 +0000
> Mel Gorman <mel@csn.ul.ie> wrote:
>
>> This patch is the core of a mechanism which compacts memory in a zone by
>> relocating movable pages towards the end of the zone.
>>
>> A single compaction run involves a migration scanner and a free scanner.
>> Both scanners operate on pageblock-sized areas in the zone. The migration
>> scanner starts at the bottom of the zone and searches for all movable pages
>> within each area, isolating them onto a private list called migratelist.
>> The free scanner starts at the top of the zone and searches for suitable
>> areas and consumes the free pages within making them available for the
>> migration scanner. The pages isolated for migration are then migrated to
>> the newly isolated free pages.
>>
>> Signed-off-by: Mel Gorman <mel@csn.ul.ie>
>> Acked-by: Rik van Riel <riel@redhat.com>
>> Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
>
> I think lru_add_drain() or lru_add_drain_all() should be called somewhere
> when we do __isolate_lru_page(). But it's (_all is) slow....
>
migrate_prep does it.
--
Kind regards,
Minchan Kim
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next prev parent reply other threads:[~2010-03-24 1:47 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-23 12:25 [PATCH 0/11] Memory Compaction v5 Mel Gorman
2010-03-23 12:25 ` [PATCH 01/11] mm,migration: Take a reference to the anon_vma before migrating Mel Gorman
2010-03-23 12:25 ` [PATCH 02/11] mm,migration: Do not try to migrate unmapped anonymous pages Mel Gorman
2010-03-23 17:22 ` Christoph Lameter
2010-03-23 18:04 ` Mel Gorman
2010-03-23 12:25 ` [PATCH 03/11] mm: Share the anon_vma ref counts between KSM and page migration Mel Gorman
2010-03-23 17:25 ` Christoph Lameter
2010-03-23 23:55 ` KAMEZAWA Hiroyuki
2010-03-23 12:25 ` [PATCH 04/11] Allow CONFIG_MIGRATION to be set without CONFIG_NUMA or memory hot-remove Mel Gorman
2010-03-23 12:25 ` [PATCH 05/11] Export unusable free space index via /proc/unusable_index Mel Gorman
2010-03-23 17:31 ` Christoph Lameter
2010-03-23 18:14 ` Mel Gorman
2010-03-24 0:03 ` KAMEZAWA Hiroyuki
2010-03-24 0:16 ` Minchan Kim
2010-03-24 0:13 ` KAMEZAWA Hiroyuki
2010-03-24 10:25 ` Mel Gorman
2010-03-23 12:25 ` [PATCH 06/11] Export fragmentation index via /proc/extfrag_index Mel Gorman
2010-03-23 17:37 ` Christoph Lameter
2010-03-23 12:25 ` [PATCH 07/11] Memory compaction core Mel Gorman
2010-03-23 17:56 ` Christoph Lameter
2010-03-23 18:15 ` Mel Gorman
2010-03-23 18:33 ` Christoph Lameter
2010-03-23 18:58 ` Mel Gorman
2010-03-23 19:20 ` Christoph Lameter
2010-03-24 1:03 ` KAMEZAWA Hiroyuki
2010-03-24 1:47 ` Minchan Kim [this message]
2010-03-24 1:53 ` KAMEZAWA Hiroyuki
2010-03-24 2:10 ` Minchan Kim
2010-03-24 10:57 ` Mel Gorman
2010-03-24 20:33 ` Andrew Morton
2010-03-24 20:59 ` Jonathan Corbet
2010-03-24 21:14 ` Andrew Morton
2010-03-24 21:19 ` Christoph Lameter
2010-03-24 21:19 ` Andrea Arcangeli
2010-03-24 21:28 ` Jonathan Corbet
2010-03-24 21:47 ` Andrea Arcangeli
2010-03-24 21:54 ` Jonathan Corbet
2010-03-24 22:06 ` Andrea Arcangeli
2010-03-24 21:57 ` Andrea Arcangeli
2010-03-25 9:13 ` Mel Gorman
2010-03-23 12:25 ` [PATCH 08/11] Add /proc trigger for memory compaction Mel Gorman
2010-03-23 18:25 ` Christoph Lameter
2010-03-23 18:32 ` Mel Gorman
2010-03-24 20:33 ` Andrew Morton
2010-03-26 10:46 ` Mel Gorman
2010-03-23 12:25 ` [PATCH 09/11] Add /sys trigger for per-node " Mel Gorman
2010-03-23 18:27 ` Christoph Lameter
2010-03-23 22:45 ` Minchan Kim
2010-03-24 0:19 ` KAMEZAWA Hiroyuki
2010-03-23 12:25 ` [PATCH 10/11] Direct compact when a high-order allocation fails Mel Gorman
2010-03-23 23:10 ` Minchan Kim
2010-03-24 11:11 ` Mel Gorman
2010-03-24 11:59 ` Minchan Kim
2010-03-24 12:06 ` Minchan Kim
2010-03-24 12:10 ` Mel Gorman
2010-03-24 12:09 ` Mel Gorman
2010-03-24 12:25 ` Minchan Kim
2010-03-24 1:19 ` KAMEZAWA Hiroyuki
2010-03-24 11:40 ` Mel Gorman
2010-03-25 0:30 ` KAMEZAWA Hiroyuki
2010-03-25 9:48 ` Mel Gorman
2010-03-25 9:50 ` KAMEZAWA Hiroyuki
2010-03-25 10:16 ` Mel Gorman
2010-03-26 1:03 ` KAMEZAWA Hiroyuki
2010-03-26 9:40 ` Mel Gorman
2010-03-24 20:48 ` Andrew Morton
2010-03-25 0:57 ` KAMEZAWA Hiroyuki
2010-03-25 10:21 ` Mel Gorman
2010-03-23 12:25 ` [PATCH 11/11] Do not compact within a preferred zone after a compaction failure Mel Gorman
2010-03-23 18:31 ` Christoph Lameter
2010-03-23 18:39 ` Mel Gorman
2010-03-23 19:27 ` Christoph Lameter
2010-03-24 10:37 ` Mel Gorman
2010-03-24 19:54 ` Christoph Lameter
2010-03-24 20:53 ` Andrew Morton
2010-03-25 9:40 ` Mel Gorman
-- strict thread matches above, loose matches on Subject: below --
2010-03-12 16:41 [PATCH 0/11] Memory Compaction v4 Mel Gorman
2010-03-12 16:41 ` [PATCH 07/11] Memory compaction core Mel Gorman
2010-03-15 13:44 ` Minchan Kim
2010-03-15 14:41 ` Mel Gorman
2010-03-17 10:31 ` KOSAKI Motohiro
2010-03-17 11:40 ` Mel Gorman
2010-03-18 2:35 ` KOSAKI Motohiro
2010-03-18 11:43 ` Mel Gorman
2010-03-19 6:21 ` KOSAKI Motohiro
2010-03-18 17:08 ` Mel Gorman
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