From: Kasper Sandberg <lkml@metanurb.dk>
To: Mike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>,
Jason Garrett-Glaser <darkshikari@gmail.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
LKML Mailinglist <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: x264 benchmarks BFS vs CFS
Date: Fri, 18 Dec 2009 11:57:36 +0100 [thread overview]
Message-ID: <1261133856.14314.39.camel@localhost> (raw)
In-Reply-To: <1261121405.30469.8.camel@marge.simson.net>
On Fri, 2009-12-18 at 08:30 +0100, Mike Galbraith wrote:
> On Fri, 2009-12-18 at 06:23 +0100, Ingo Molnar wrote:
>
> > Having said that, we generally try to make things perform well without apps
> > having to switch themselves to SCHED_BATCH. Mike, do you think we can make
> > x264 perform as well (or nearly as well) under SCHED_OTHER as under
> > SCHED_BATCH?
>
> It's not bad as is, except for ultrafast mode. START_DEBIT is the
> biggest problem there. I don't think SCHED_OTHER will ever match
> SCHED_BATCH for this load, though I must say I haven't full-spectrum
> tested. This load really wants RR scheduling, and wakeup preemption
> necessarily perturbs run order.
>
> I'll probably piddle with it some more, it's an interesting load.
Yes, i must say, very interresting, its very complicated and... oh wait,
its just encoding a movie!
>
> -Mike
>
> --
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next prev parent reply other threads:[~2009-12-18 10:57 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-17 9:33 x264 benchmarks BFS vs CFS Kasper Sandberg
2009-12-17 10:42 ` Jason Garrett-Glaser
2009-12-17 10:53 ` Ingo Molnar
2009-12-17 11:00 ` Kasper Sandberg
2009-12-17 12:08 ` Ingo Molnar
2009-12-17 12:35 ` Kasper Sandberg
2009-12-17 15:47 ` Arjan van de Ven
2009-12-17 13:30 ` Mike Galbraith
2009-12-18 10:54 ` Kasper Sandberg
2009-12-18 11:41 ` Mike Galbraith
2009-12-17 21:22 ` Thomas Fjellstrom
2009-12-18 10:56 ` Kasper Sandberg
2009-12-18 1:18 ` Jason Garrett-Glaser
2009-12-18 5:23 ` Ingo Molnar
2009-12-18 7:30 ` Mike Galbraith
2009-12-18 10:11 ` Jason Garrett-Glaser
2009-12-18 12:49 ` Mike Galbraith
2009-12-18 13:06 ` Ingo Molnar
2009-12-18 13:36 ` Mike Galbraith
2009-12-18 13:53 ` Mike Galbraith
2009-12-18 10:57 ` Kasper Sandberg [this message]
2009-12-18 11:05 ` Jason Garrett-Glaser
2009-12-19 1:08 ` Con Kolivas
2009-12-19 4:03 ` Mike Galbraith
2009-12-19 17:36 ` Kasper Sandberg
2009-12-19 20:57 ` Mike Galbraith
2009-12-20 3:22 ` Andres Freund
2009-12-20 12:10 ` Kasper Sandberg
2009-12-20 13:09 ` Kasper Sandberg
2009-12-20 15:13 ` Mike Galbraith
2009-12-20 15:51 ` Mike Galbraith
2009-12-22 7:33 ` Jason Garrett-Glaser
2009-12-22 7:39 ` Jason Garrett-Glaser
2009-12-18 10:56 ` Kasper Sandberg
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