From: "Lee Revell" <rlrevell@joe-job.com>
To: "David Lang" <david.lang@digitalinsight.com>
Cc: "Mike Galbraith" <efault@gmx.de>,
"Con Kolivas" <kernel@kolivas.org>, "Ingo Molnar" <mingo@elte.hu>,
"linux kernel mailing list" <linux-kernel@vger.kernel.org>,
"ck list" <ck@vds.kolivas.org>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Andrew Morton" <akpm@linux-foundation.org>
Subject: Re: [PATCH][RSDL-mm 0/7] RSDL cpu scheduler for 2.6.21-rc3-mm2
Date: Mon, 12 Mar 2007 22:23:37 -0400 [thread overview]
Message-ID: <75b66ecd0703121923q2f9913cdm8179122d95015ad8@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.63.0703121523220.1245@qynat.qvtvafvgr.pbz>
On 3/12/07, David Lang <david.lang@digitalinsight.com> wrote:
> the problem comes when this isn't enough. if you have several CPU hogs on a
> system, and they are all around the same priority level, how can the scheduler
> know which one needs the CPU the most for good interactivity?
>
> in some cases you may be able to directly detect that your high-priority process
> is waiting for another one (tracing pipes and local sockets for example), but
> what if you are waiting for several of them? (think a multimedia desktop waiting
> for the sound card, CDRom, hard drive, and video all at once) which one needs
> the extra CPU the most?
I'm not an expert in this area by any means but after reading this
thread the OSX solution of simply telling the kernel "I'm the GUI,
schedule me accordingly" looks increasingly attractive. Why make the
kernel guess when we can just be explicit?
Does anyone know of a UNIX-like system that has managed to solve this
problem without hooking the GUI into the scheduler?
Lee
next prev parent reply other threads:[~2007-03-13 2:23 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-11 3:57 [PATCH][RSDL-mm 0/7] RSDL cpu scheduler for 2.6.21-rc3-mm2 Con Kolivas
2007-03-11 11:39 ` Mike Galbraith
2007-03-11 11:48 ` Con Kolivas
2007-03-11 12:08 ` Mike Galbraith
2007-03-11 12:10 ` Ingo Molnar
2007-03-11 12:20 ` Mike Galbraith
2007-03-11 21:18 ` Mike Galbraith
2007-03-12 7:22 ` Mike Galbraith
2007-03-12 7:48 ` Con Kolivas
2007-03-12 8:29 ` Con Kolivas
2007-03-12 8:55 ` Mike Galbraith
2007-03-12 9:22 ` Con Kolivas
2007-03-12 9:38 ` Mike Galbraith
2007-03-12 10:27 ` Con Kolivas
2007-03-12 10:57 ` Mike Galbraith
2007-03-12 11:08 ` Ingo Molnar
2007-03-12 11:23 ` Con Kolivas
2007-03-12 13:48 ` Theodore Tso
2007-03-12 18:09 ` Con Kolivas
2007-03-12 14:34 ` Mike Galbraith
2007-03-12 15:26 ` Linus Torvalds
2007-03-12 18:10 ` Con Kolivas
2007-03-12 19:36 ` Peter Zijlstra
2007-03-12 20:36 ` Mike Galbraith
2007-03-13 4:17 ` Kyle Moffett
2007-03-13 8:09 ` Ingo Molnar
2007-03-12 18:49 ` Con Kolivas
2007-03-12 19:06 ` Xavier Bestel
2007-03-13 17:21 ` Valdis.Kletnieks
2007-03-12 20:11 ` Mike Galbraith
2007-03-12 20:38 ` Con Kolivas
2007-03-12 20:45 ` Mike Galbraith
2007-03-12 22:51 ` Con Kolivas
2007-03-13 5:10 ` Mike Galbraith
2007-03-13 5:53 ` Con Kolivas
2007-03-13 6:08 ` [ck] " Rodney Gordon II
2007-03-13 6:17 ` Mike Galbraith
2007-03-13 7:53 ` Mike Galbraith
2007-03-13 8:22 ` Ingo Molnar
2007-03-13 8:18 ` Ingo Molnar
2007-03-13 8:22 ` Mike Galbraith
2007-03-13 9:21 ` Con Kolivas
2007-03-13 9:29 ` Ingo Molnar
2007-03-13 9:41 ` Con Kolivas
2007-03-13 10:50 ` Bill Huey
2007-03-13 9:31 ` [ck] " Con Kolivas
2007-03-13 10:24 ` Xavier Bestel
2007-03-13 23:19 ` Sanjoy Mahajan
2007-03-13 9:33 ` Mike Galbraith
2007-03-13 9:39 ` Ingo Molnar
2007-03-13 10:06 ` Con Kolivas
2007-03-13 11:23 ` Mike Galbraith
2007-03-13 11:41 ` Serge Belyshev
2007-03-13 11:46 ` Mike Galbraith
2007-03-13 15:36 ` John Stoffel
2007-03-13 14:17 ` Matt Mackall
2007-03-13 15:15 ` David Schwartz
2007-03-13 17:59 ` Jeremy Fitzhardinge
2007-03-13 19:58 ` David Schwartz
2007-03-13 20:10 ` Jeremy Fitzhardinge
2007-03-13 20:35 ` Bill Huey
2007-03-13 20:27 ` Bill Huey
2007-03-16 16:42 ` Pavel Machek
2007-03-12 23:43 ` David Lang
2007-03-13 2:23 ` Lee Revell [this message]
2007-03-13 6:00 ` David Lang
2007-03-12 21:34 ` [ck] " jos poortvliet
2007-03-12 21:38 ` michael chang
2007-03-13 0:09 ` Thibaut VARENE
2007-03-13 6:08 ` Mike Galbraith
2007-03-13 6:16 ` Con Kolivas
2007-03-13 6:30 ` Mike Galbraith
2007-03-12 20:42 ` Peter Zijlstra
2007-03-12 21:05 ` Serge Belyshev
2007-03-12 21:41 ` Mike Galbraith
2007-03-12 11:25 ` Mike Galbraith
2007-03-12 9:38 ` Xavier Bestel
2007-03-12 10:34 ` Con Kolivas
2007-03-12 16:38 ` Kasper Sandberg
2007-03-14 2:25 ` Valdis.Kletnieks
2007-03-14 3:25 ` Gabriel C
2007-03-14 9:44 ` Xavier Bestel
2007-03-12 8:44 ` Mike Galbraith
2007-03-11 14:32 ` Gene Heskett
2007-03-12 6:58 ` Radoslaw Szkodzinski
2007-03-12 11:16 ` Gene Heskett
2007-03-12 11:49 ` Gene Heskett
2007-03-12 11:58 ` Con Kolivas
2007-03-12 16:38 ` Gene Heskett
2007-03-12 18:34 ` Gene Heskett
2007-03-12 19:53 Al Boldi
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