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From: Roger Luethi <rl@hellgate.ch>
To: Rik van Riel <riel@redhat.com>
Cc: William Lee Irwin III <wli@holomorphy.com>,
	Con Kolivas <kernel@kolivas.org>,
	Chris Vine <chris@cvine.freeserve.co.uk>,
	linux-kernel@vger.kernel.org,
	"Martin J. Bligh" <mbligh@aracnet.com>
Subject: Re: 2.6.0-test9 - poor swap performance on low end machines
Date: Thu, 11 Dec 2003 11:16:55 +0100	[thread overview]
Message-ID: <20031211101655.GB5192@k3.hellgate.ch> (raw)
In-Reply-To: <Pine.LNX.4.44.0312102027001.25222-100000@chimarrao.boston.redhat.com>

On Wed, 10 Dec 2003 20:31:40 -0500, Rik van Riel wrote:
> Hmmm, those definitions have changed a little from the
> OS books I read ;))
> 
> > - It is light thrashing when load control has no advantage.
> 
> This used to be called "no thrashing" ;)

Fair enough, but that was before Linux 2.6 <g>.

kbuild benchmark, execution time in seconds (median over ten runs):
 74	2.6.0-test11, 256 MB RAM
115	2.4.21, 64 MB RAM
539	2.6.0-test11, 64 MB RAM

We can call it lousy paging, that'll be fine with me.

> Also, it would make the job of a load control mechanism
> really easy to define:
> 
> 	"Prevent the system from thrashing"

"... once all other means are exhausted". Then I'll buy it.

Roger

  reply	other threads:[~2003-12-11 10:18 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-29 22:30 2.6.0-test9 - poor swap performance on low end machines Chris Vine
2003-10-31  3:57 ` Rik van Riel
2003-10-31 11:26   ` Roger Luethi
2003-10-31 12:37     ` Con Kolivas
2003-10-31 12:59       ` Roger Luethi
2003-10-31 12:55     ` Ed Tomlinson
2003-11-01 18:34       ` Pasi Savolainen
2003-11-06 18:40       ` bill davidsen
2003-10-31 21:52   ` Chris Vine
2003-11-02 23:06   ` Chris Vine
2003-11-03  0:48     ` Con Kolivas
2003-11-03 21:13       ` Chris Vine
2003-11-04  2:55         ` Con Kolivas
2003-11-04 22:08           ` Chris Vine
2003-11-04 22:30             ` Con Kolivas
2003-12-08 13:52           ` William Lee Irwin III
2003-12-08 14:23             ` Con Kolivas
2003-12-08 14:30               ` William Lee Irwin III
2003-12-09 21:03               ` Chris Vine
2003-12-13 14:08               ` Chris Vine
2003-12-08 19:49             ` Roger Luethi
2003-12-08 20:48               ` William Lee Irwin III
2003-12-09  0:27                 ` Roger Luethi
2003-12-09  4:05                   ` William Lee Irwin III
2003-12-09 15:11                     ` Roger Luethi
2003-12-09 16:04                       ` Rik van Riel
2003-12-09 16:31                         ` Roger Luethi
2003-12-09 18:31                       ` William Lee Irwin III
2003-12-09 19:38                       ` William Lee Irwin III
2003-12-10 13:58                         ` Roger Luethi
2003-12-10 17:47                           ` William Lee Irwin III
2003-12-10 22:23                             ` Roger Luethi
2003-12-11  0:12                               ` William Lee Irwin III
2003-12-10 21:04                           ` Rik van Riel
2003-12-10 23:17                             ` Roger Luethi
2003-12-11  1:31                               ` Rik van Riel
2003-12-11 10:16                                 ` Roger Luethi [this message]
2003-12-10 23:30                           ` Helge Hafting
2003-12-10 21:52                 ` Andrea Arcangeli
2003-12-10 22:05                   ` Roger Luethi
2003-12-10 22:44                     ` Andrea Arcangeli
2003-12-11  1:28                       ` William Lee Irwin III
2003-12-11  1:32                         ` Rik van Riel
2003-12-11 10:16                       ` Roger Luethi
2003-12-15 23:31                       ` Andrew Morton
2003-12-15 23:37                         ` Andrea Arcangeli
2003-12-15 23:54                           ` Andrew Morton
2003-12-16  0:17                             ` Rik van Riel
2003-12-16 11:23                             ` Roger Luethi
2003-12-16 16:29                               ` Rik van Riel
2003-12-17 11:03                                 ` Roger Luethi
2003-12-17 11:06                                   ` William Lee Irwin III
2003-12-17 16:50                                     ` Roger Luethi
2003-12-17 11:33                                   ` Rik van Riel
2003-12-17 18:53                               ` Rik van Riel
2003-12-17 19:27                                 ` William Lee Irwin III
2003-12-17 19:51                                   ` Rik van Riel
2003-12-17 19:49                                 ` Roger Luethi
2003-12-17 21:41                                   ` Andrew Morton
2003-12-17 21:41                                   ` Roger Luethi
2003-12-18  0:21                                     ` Rik van Riel
2003-12-18 22:53                                       ` Roger Luethi
2003-12-18 23:38                                         ` William Lee Irwin III

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