From: Christoph Lameter <clameter@sgi.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mel Gorman <mel@csn.ul.ie>, Andy Whitcroft <apw@shadowen.org>,
Andrew Morton <akpm@osdl.org>,
Nick Piggin <nickpiggin@yahoo.com.au>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: Page allocator: Single Zone optimizations
Date: Fri, 3 Nov 2006 11:23:17 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0611031121230.15242@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <1162579983.26989.27.camel@twins>
On Fri, 3 Nov 2006, Peter Zijlstra wrote:
> > IMHO Moving pages creates less collateral damage than evicting
> > random pages.
>
> Move them where?, you have to drop pages anyway, the only thing
> migrate_pages() (my bad for calling it move_pages()) might help with is
> preserving LRU order better and the possibility to move otherwise
> unreclaimable pages to a more favourable position (page-tables,
> mlock'ed).
If you do not have any memory left then we run reclaim to free pages.
We are dealing here with the issue that we have enough memory free but
it is not contiguous. So we have other places where we could put these
pages.
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next prev parent reply other threads:[~2006-11-03 19:23 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-17 0:50 Christoph Lameter
2006-10-17 1:10 ` Andrew Morton
2006-10-17 1:13 ` Christoph Lameter
2006-10-17 1:27 ` KAMEZAWA Hiroyuki
2006-10-17 1:25 ` Christoph Lameter
2006-10-17 6:04 ` Nick Piggin
2006-10-17 17:54 ` Christoph Lameter
2006-10-18 11:15 ` Nick Piggin
2006-10-18 19:38 ` Andrew Morton
2006-10-23 23:08 ` Christoph Lameter
2006-10-24 1:07 ` Christoph Lameter
2006-10-26 22:09 ` Andrew Morton
2006-10-26 22:28 ` Christoph Lameter
2006-10-28 1:00 ` Christoph Lameter
2006-10-28 2:04 ` Andrew Morton
2006-10-28 2:12 ` Christoph Lameter
2006-10-28 2:24 ` Andrew Morton
2006-10-28 2:31 ` Christoph Lameter
2006-10-28 4:43 ` Andrew Morton
2006-10-28 7:47 ` KAMEZAWA Hiroyuki
2006-10-28 16:12 ` Andi Kleen
2006-10-29 0:48 ` Christoph Lameter
2006-10-29 1:04 ` Andrew Morton
2006-10-29 1:29 ` Christoph Lameter
2006-10-29 11:32 ` Nick Piggin
2006-10-30 16:41 ` Christoph Lameter
2006-11-01 18:26 ` Mel Gorman
2006-11-01 20:34 ` Andrew Morton
2006-11-01 21:00 ` Christoph Lameter
2006-11-01 21:46 ` Andrew Morton
2006-11-01 21:50 ` Christoph Lameter
2006-11-01 22:13 ` Mel Gorman
2006-11-01 23:29 ` Christoph Lameter
2006-11-02 0:22 ` Andrew Morton
2006-11-02 0:27 ` Christoph Lameter
2006-11-02 12:45 ` Mel Gorman
2006-11-01 22:10 ` Mel Gorman
2006-11-02 17:37 ` Andy Whitcroft
2006-11-02 18:08 ` Christoph Lameter
2006-11-02 20:58 ` Mel Gorman
2006-11-02 21:04 ` Christoph Lameter
2006-11-02 21:16 ` Mel Gorman
2006-11-02 21:52 ` Christoph Lameter
2006-11-02 22:37 ` Mel Gorman
2006-11-02 22:50 ` Christoph Lameter
2006-11-03 9:14 ` Mel Gorman
2006-11-03 13:17 ` Andy Whitcroft
2006-11-03 18:11 ` Christoph Lameter
2006-11-03 19:06 ` Mel Gorman
2006-11-03 19:44 ` Christoph Lameter
2006-11-03 21:11 ` Mel Gorman
2006-11-03 21:42 ` Christoph Lameter
2006-11-03 21:50 ` Andrew Morton
2006-11-03 21:53 ` Christoph Lameter
2006-11-03 22:12 ` Andrew Morton
2006-11-03 22:15 ` Christoph Lameter
2006-11-03 22:19 ` Andi Kleen
2006-11-04 0:37 ` Christoph Lameter
2006-11-04 1:32 ` Andi Kleen
2006-11-06 16:40 ` Christoph Lameter
2006-11-06 16:56 ` Andi Kleen
2006-11-06 17:00 ` Christoph Lameter
2006-11-06 17:07 ` Andi Kleen
2006-11-06 17:12 ` Hugh Dickins
2006-11-06 17:15 ` Christoph Lameter
2006-11-06 17:20 ` Andi Kleen
2006-11-06 17:26 ` Christoph Lameter
2006-11-07 16:30 ` Mel Gorman
2006-11-07 17:54 ` Christoph Lameter
2006-11-07 18:14 ` Mel Gorman
2006-11-08 0:29 ` KAMEZAWA Hiroyuki
2006-11-08 2:08 ` Christoph Lameter
2006-11-13 21:08 ` Mel Gorman
2006-11-03 12:48 ` Peter Zijlstra
2006-11-03 18:15 ` Christoph Lameter
2006-11-03 18:53 ` Peter Zijlstra
2006-11-03 19:23 ` Christoph Lameter [this message]
2006-11-02 18:52 ` Andrew Morton
2006-11-02 21:51 ` Mel Gorman
2006-11-02 22:03 ` Andy Whitcroft
2006-11-02 22:11 ` Andrew Morton
2006-11-01 18:13 ` Mel Gorman
2006-11-01 17:39 ` Mel Gorman
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