From: Mike Galbraith <mikeg@wen-online.de>
To: Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>
Cc: Rik van Riel <riel@conectiva.com.br>,
"Stephen C. Tweedie" <sct@redhat.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [RFC][PATCH] Re: Linux 2.4.4-ac10
Date: Sun, 20 May 2001 19:38:59 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.33.0105201740570.1377-100000@mikeg.weiden.de> (raw)
In-Reply-To: <20010520173252.Q754@nightmaster.csn.tu-chemnitz.de>
On Sun, 20 May 2001, Ingo Oeser wrote:
> On Sun, May 20, 2001 at 05:29:49AM +0200, Mike Galbraith wrote:
> > I'm not sure why that helps. I didn't put it in as a trick or
> > anything though. I put it in because it didn't seem like a
> > good idea to ever have more cleaned pages than free pages at a
> > time when we're yammering for help.. so I did that and it helped.
>
> The rationale for this is easy: free pages is wasted memory,
> clean pages is hot, clean cache. The best state a cache can be in.
Sure. Under low load, cache is great. Under stress, keeping it is
not an option though ;-) We're at or beyond capacity and moving at
a high delda V (people yammering for help). If you can recognize and
kill the delta rapidly by dumping that which you are going to have
to dump anyway, you save time getting back on your feet. (my guess
as to why dumping clean pages does measurably help in this case)
-Mike
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next prev parent reply other threads:[~2001-05-20 17:38 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.21.0105181403280.5531-100000@imladris.rielhome.conectiva>
[not found] ` <Pine.LNX.4.33.0105181936240.583-100000@mikeg.weiden.de>
2001-05-18 18:19 ` Ingo Oeser
2001-05-18 18:23 ` Rik van Riel
2001-05-18 18:58 ` Ingo Oeser
2001-05-18 20:12 ` Rik van Riel
2001-05-18 20:24 ` Mike Galbraith
2001-05-18 20:09 ` Mike Galbraith
2001-05-18 22:44 ` Rik van Riel
2001-05-18 22:58 ` Stephen C. Tweedie
2001-05-19 2:12 ` Rik van Riel
2001-05-19 2:32 ` Mike Castle
2001-05-19 6:45 ` Mike Galbraith
2001-05-19 4:40 ` Mike Galbraith
2001-05-19 17:13 ` [RFC][PATCH] " Mike Galbraith
2001-05-19 21:41 ` Rik van Riel
2001-05-20 3:29 ` Mike Galbraith
2001-05-20 6:42 ` Rik van Riel
2001-05-20 8:08 ` Mike Galbraith
[not found] ` <Pine.LNX.4.21.0105200546241.5531-100000@imladris.rielhome.conectiva>
2001-05-20 9:47 ` Mike Galbraith
[not found] ` <Pine.LNX.4.21.0105200703270.5531-100000@imladris.rielhome.conectiva>
2001-05-21 13:36 ` Stephen C. Tweedie
2001-05-20 21:54 ` Pavel Machek
2001-05-21 20:32 ` David Weinehall
2001-05-23 15:34 ` Rik van Riel
2001-05-23 17:24 ` Jonathan Morton
2001-05-25 8:39 ` Pavel Machek
2001-05-23 17:51 ` Scott Anderson
2001-05-25 8:10 ` David Weinehall
2001-05-25 18:39 ` Pavel Machek
2001-06-04 19:22 ` RPM Installation - Compilation errors jalaja devi
2001-05-24 8:48 ` [RFC][PATCH] Re: Linux 2.4.4-ac10 Mike Galbraith
2001-05-24 9:10 ` Rik van Riel
2001-05-24 10:32 ` Mike Galbraith
2001-05-24 11:03 ` Rik van Riel
2001-05-24 14:23 ` Mike Galbraith
2001-05-20 15:32 ` Ingo Oeser
2001-05-20 17:38 ` Mike Galbraith [this message]
2001-05-20 13:44 ` Zlatko Calusic
2001-05-20 17:58 ` Mike Galbraith
2001-05-20 19:32 ` Marcelo Tosatti
2001-05-20 21:03 ` Marcelo Tosatti
2001-05-21 3:54 ` Mike Galbraith
[not found] <Pine.LNX.4.21.0105201837240.5531-100000@imladris.rielhome.conectiva>
2001-05-21 3:44 ` Mike Galbraith
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