From: Con Kolivas <kernel@kolivas.org>
To: Mike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>,
linux kernel mailing list <linux-kernel@vger.kernel.org>,
ck list <ck@vds.kolivas.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 18:48:44 +1100 [thread overview]
Message-ID: <200703121848.44714.kernel@kolivas.org> (raw)
In-Reply-To: <1173684174.6659.13.camel@Homer.simpson.net>
On Monday 12 March 2007 18:22, Mike Galbraith wrote:
> On Sun, 2007-03-11 at 13:10 +0100, Ingo Molnar wrote:
> > * Mike Galbraith <efault@gmx.de> wrote:
> > > > Full patch for 2.6.21-rc3-mm2:
> > > > http://ck.kolivas.org/patches/staircase-deadline/2.6.21-rc3-mm2-rsdl-
> > > >0.29.patch
> > >
> > > I'm seeing a cpu distribution problem running this on my P4 box.
> > >
> > > With 2.6.21-rc3, X/Gforce maintain their ~50% cpu (remain smooth), and
> > > the encoders (100%cpu bound) get whats left when Amarok isn't eating
> > > it.
> > >
> > > I plunked the above patch into plain 2.6.21-rc3 and retested to
> > > eliminate other mm tree differences, and it's repeatable. The nice 5
> > > cpu hogs always receive considerably more that the nice 0 sleepers.
> >
> > hm. Do you get the same same problem on UP too? (i.e. lets eliminate any
> > SMP/HT artifacts)
>
> Behavior is slightly different with a UP kernel. Neither encoder
> receives more cpu than X, but they each still receive more than gforce.
> The distribution of X/Gforce vs lame/lame averages per eyeball to
> roughly ~50:50.
>
> I noticed Con posted an accounting fix, and applied it. No change.
So the lames are nice 5 which means they should receive 75% of the cpu that
nice 0 tasks receive so they should get 43% of the cpu...
Just a couple of questions;
The X/Gforce case; do they alternate cpu between them? By that I mean when
they're the only thing running does the cpu load summate to 1 or does it
summate to 2?
Gforce presumably is a 3d visualisation? Do you use one of the graphics card
drivers listed that uses yield?
,----[grep -r sched_yield mesa]
| mesa/mesa/src/mesa/drivers/dri/r300/radeon_ioctl.c: sched_yield();
| mesa/mesa/src/mesa/drivers/dri/i915tex/intel_batchpool.c:
sched_yield();
| mesa/mesa/src/mesa/drivers/dri/i915tex/intel_batchbuffer.c:
sched_yield();
| mesa/mesa/src/mesa/drivers/dri/common/vblank.h:#include <sched.h> /* for
sched_yield() */
| mesa/mesa/src/mesa/drivers/dri/common/vblank.h:#include <sched.h> /* for
sched_yield() */
| mesa/mesa/src/mesa/drivers/dri/common/vblank.h: sched_yield();
\
| mesa/mesa/src/mesa/drivers/dri/unichrome/via_ioctl.c: sched_yield();
| mesa/mesa/src/mesa/drivers/dri/i915/intel_ioctl.c: sched_yield();
| mesa/mesa/src/mesa/drivers/dri/r200/r200_ioctl.c: sched_yield();
`----
Thanks
--
-ck
next prev parent reply other threads:[~2007-03-12 7:49 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 [this message]
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
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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