From: Ed Tomlinson <tomlins@cam.org>
To: Andrew Morton <akpm@digeo.com>, linux-mm@kvack.org
Subject: Re: 2.5.68-mm2
Date: Wed, 23 Apr 2003 08:08:25 -0400 [thread overview]
Message-ID: <200304230808.25387.tomlins@cam.org> (raw)
In-Reply-To: <20030423012046.0535e4fd.akpm@digeo.com>
On April 23, 2003 04:20 am, Andrew Morton wrote:
> . I got tired of the objrmap code going BUG under stress, so it is now in
> disgrace in the experimental/ directory.
As far as I see it there are two problems that objrmap/shpte/pgcl try to solve.
One is low memory pte useage, the second being to reduce the rmap fork overhead.
objrmap helps in both cases but has problem with truncate and intoduces a O(n^2)
search into the the vm.
shpte helps a lot with the first problem, and does not seem to do much for the
second. If I remember correctly it could also be a config option.
pgcl should help with both to some extent but is not ready for prime time - yet.
>From comments recently made on lkml I believe that the first problem is probably
more pressing. What problems need to be resolved with each patch?
Ed Tomlinson
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next prev parent reply other threads:[~2003-04-23 12:08 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-23 8:20 2.5.68-mm2 Andrew Morton
2003-04-23 9:59 ` 2.5.68-mm2 William Lee Irwin III
2003-04-23 16:50 ` 2.5.68-mm2 Robert Love
2003-04-23 16:57 ` 2.5.68-mm2 Martin J. Bligh
2003-04-23 17:11 ` 2.5.68-mm2 Robert Love
2003-04-24 9:14 ` 2.5.68-mm2 William Lee Irwin III
2003-04-23 12:08 ` Ed Tomlinson [this message]
2003-04-23 12:37 ` 2.5.68-mm2 William Lee Irwin III
2003-04-23 14:25 ` 2.5.68-mm2 Martin J. Bligh
2003-04-23 14:51 ` 2.5.68-mm2 Martin J. Bligh
2003-04-23 15:14 ` 2.5.68-mm2 Alex Tomas
2003-04-23 21:46 ` 2.5.68-mm2 Andrew Morton
2003-04-23 21:47 ` 2.5.68-mm2 Martin J. Bligh
2003-04-24 3:39 ` 2.5.68-mm2 Benjamin LaHaise
2003-04-24 21:13 ` 2.5.68-mm2 Martin J. Bligh
2003-04-24 23:13 ` objrmap (was 2.5.68-mm2) Martin J. Bligh
2003-04-24 3:36 ` 2.5.68-mm2 Benjamin LaHaise
2003-04-24 20:24 ` 2.5.68-mm2 Bill Davidsen
2003-04-24 20:33 ` 2.5.68-mm2 Benjamin LaHaise
2003-04-25 17:56 ` 2.5.68-mm2 Bill Davidsen
2003-04-25 18:20 ` 2.5.68-mm2 Randy.Dunlap
2003-04-25 18:27 ` 2.5.68-mm2 Robert Love
2003-04-25 18:49 ` 2.5.68-mm2 Martin J. Bligh
2003-04-26 10:34 ` 2.5.68-mm2 Bill Davidsen
2003-04-26 15:34 ` 2.5.68-mm2 Martin J. Bligh
2003-05-01 6:19 ` [BUG] 2.5.68-mm2 and list.h Alexander Hoogerhuis
2003-05-01 6:31 ` Andrew Morton
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