From: John Heil <kerndev@sc-software.com>
To: Thierry Forveille <forveill@cfht.hawaii.edu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Scheduler ( was: Just a second ) ...
Date: Mon, 17 Dec 2001 21:41:02 +0000 ( ) [thread overview]
Message-ID: <Pine.LNX.3.95.1011217213742.581a-100000@scsoftware.sc-software.com> (raw)
In-Reply-To: <15390.53230.827019.336771@hoku.cfht.hawaii.edu>
On Mon, 17 Dec 2001, Thierry Forveille wrote:
> Date: Mon, 17 Dec 2001 19:11:10 -1000 (HST)
> From: Thierry Forveille <forveill@cfht.hawaii.edu>
> To: linux-kernel@vger.kernel.org
> Subject: Re: Scheduler ( was: Just a second ) ...
>
> Linus Torvalds (torvalds@transmeta.com) writes
> > On Mon, 17 Dec 2001, Rik van Riel wrote:
> > >
> > > Try readprofile some day, chances are schedule() is pretty
> > > near the top of the list.
> >
> > Ehh.. Of course I do readprofile.
> >
> > But did you ever compare readprofile output to _total_ cycles spent?
> >
> I have a feeling that this discussion got sidetracked: cpu cycles burnt
> in the scheduler indeed is non-issue, but big tasks being needlessly moved
> around on SMPs is worth tackling.
Given a cpu affinity facility, policy mgmt would belong in user space.
CPU affinity would be pretty simple and I think the effort is already
in flight IIRC.
Johnh
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John Heil
South Coast Software
Custom systems software for UNIX and IBM MVS mainframes
1-714-774-6952
johnhscs@sc-software.com
http://www.sc-software.com
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next prev parent reply other threads:[~2001-12-18 5:43 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-18 5:11 Thierry Forveille
2001-12-17 21:41 ` John Heil [this message]
2001-12-18 14:31 ` Alan Cox
[not found] <Pine.LNX.4.33.0112181508001.3410-100000@penguin.transmeta.com>
2001-12-20 3:50 ` Rik van Riel
2001-12-20 4:04 ` Ryan Cumming
2001-12-20 5:52 ` Linus Torvalds
2001-12-20 5:39 ` David S. Miller
2001-12-20 5:58 ` Linus Torvalds
2001-12-20 6:01 ` David S. Miller
2001-12-20 22:40 ` Troels Walsted Hansen
2001-12-20 23:55 ` Chris Ricker
2001-12-20 23:59 ` CaT
2001-12-21 0:06 ` Davide Libenzi
2001-12-20 11:29 ` Rik van Riel
2001-12-20 11:34 ` David S. Miller
[not found] <20011218020456.A11541@redhat.com>
2001-12-18 16:50 ` Linus Torvalds
2001-12-18 16:56 ` Rik van Riel
2001-12-18 17:18 ` Linus Torvalds
2001-12-18 19:04 ` Alan Cox
2001-12-18 21:02 ` Larry McVoy
2001-12-18 21:18 ` Rik van Riel
2001-12-18 21:14 ` David S. Miller
2001-12-18 21:17 ` Larry McVoy
2001-12-18 21:19 ` Rik van Riel
2001-12-18 21:30 ` David S. Miller
2001-12-19 16:50 ` Daniel Phillips
2001-12-18 19:11 ` Mike Galbraith
2001-12-18 19:15 ` Rik van Riel
2001-12-18 17:55 ` Davide Libenzi
2001-12-18 19:43 ` Alexander Viro
-- strict thread matches above, loose matches on Subject: below --
2001-12-18 5:59 V Ganesh
[not found] <20011217200946.D753@holomorphy.com>
2001-12-18 4:27 ` Linus Torvalds
2001-12-18 4:55 ` William Lee Irwin III
2001-12-18 6:09 ` Linus Torvalds
2001-12-18 6:34 ` Jeff Garzik
2001-12-18 12:23 ` Rik van Riel
2001-12-18 14:29 ` Alan Cox
2001-12-18 17:07 ` Linus Torvalds
2001-12-18 15:51 ` Martin Josefsson
2001-12-18 17:08 ` Linus Torvalds
2001-12-18 16:16 ` Roger Larsson
2001-12-18 17:16 ` Herman Oosthuysen
2001-12-18 17:16 ` Linus Torvalds
2001-12-18 17:21 ` David Mansfield
2001-12-18 17:27 ` Linus Torvalds
2001-12-18 17:54 ` Andreas Dilger
2001-12-18 18:27 ` Doug Ledford
2001-12-18 18:52 ` Andreas Dilger
2001-12-18 19:03 ` Doug Ledford
2001-12-19 9:19 ` Peter Wächtler
2001-12-19 11:05 ` Helge Hafting
2001-12-21 20:23 ` Rob Landley
2001-12-18 18:35 ` Linus Torvalds
2001-12-18 18:58 ` Alan Cox
2001-12-18 19:31 ` Gerd Knorr
2001-12-18 18:25 ` William Lee Irwin III
2001-12-18 14:21 ` Adam Schrotenboer
2001-12-18 18:13 ` Davide Libenzi
2001-12-16 0:13 Just a second Linus Torvalds
2001-12-17 22:48 ` Scheduler ( was: Just a second ) Davide Libenzi
2001-12-17 22:53 ` Linus Torvalds
2001-12-17 23:15 ` Davide Libenzi
2001-12-17 23:18 ` Linus Torvalds
2001-12-17 23:39 ` Davide Libenzi
2001-12-17 23:52 ` Benjamin LaHaise
2001-12-18 1:11 ` Linus Torvalds
2001-12-18 1:46 ` H. Peter Anvin
2001-12-18 5:54 ` Benjamin LaHaise
2001-12-18 6:10 ` Linus Torvalds
2001-12-18 1:54 ` Rik van Riel
2001-12-18 2:35 ` Linus Torvalds
2001-12-18 2:51 ` David Lang
2001-12-18 3:08 ` Davide Libenzi
2001-12-18 3:19 ` Davide Libenzi
2001-12-18 14:09 ` Alan Cox
2001-12-18 9:12 ` John Heil
2001-12-18 15:34 ` degger
2001-12-18 18:35 ` Mike Kravetz
2001-12-18 18:48 ` Davide Libenzi
2001-12-18 16:50 ` Mike Kravetz
2001-12-18 17:22 ` Linus Torvalds
2001-12-18 17:50 ` Davide Libenzi
2001-12-18 17:00 ` Linus Torvalds
2001-12-18 19:17 ` Alan Cox
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