From: Ingo Molnar <mingo@elte.hu>
To: Ed Tomlinson <edt@aei.ca>
Cc: Rob Hussey <robjhussey@gmail.com>,
efault@gmx.de, a.p.zijlstra@chello.nl, zippel@linux-m68k.org,
linux-kernel@vger.kernel.org, ck@vds.kolivas.org
Subject: Re: Scheduler benchmarks - a follow-up
Date: Mon, 17 Sep 2007 22:22:59 +0200 [thread overview]
Message-ID: <20070917202259.GA18027@elte.hu> (raw)
In-Reply-To: <200709170712.03679.edt@aei.ca>
* Ed Tomlinson <edt@aei.ca> wrote:
> Rob,
>
> I gather this was with the complete -ck patchset? It would be
> interesting to see if just SD performed as well. If it does, CFS
> needs more work. if not there are other things in -ck that really do
> improve performance and should be looked into.
yeah. The biggest item in -ck besides SD is swap-prefetch, but that
shouldnt have an effect in this case. I _think_ that most of the
measured difference is due to scheduler details though. Right now my
estimation is that with the patch i sent to Rob, and with latest
sched-devel.git, CFS should perform as good or better than SD, even in
these micro-benchmarks. (but i cannot tell what will happen on Rob's
machine - so i'm keeping an open mind towards any other fixables :-) I'm
curious about the next round of numbers (if Rob has time to do them).
Ingo
next prev parent reply other threads:[~2007-09-17 20:23 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-17 9:21 Scheduler benchmarks - a follow-up Rob Hussey
2007-09-17 11:12 ` Ed Tomlinson
2007-09-17 11:47 ` Ingo Molnar
2007-09-17 20:22 ` Ingo Molnar [this message]
2007-09-17 11:27 ` Ingo Molnar
[not found] ` <E1IXMXf-0000uG-ID@flower>
2007-09-17 19:43 ` Willy Tarreau
2007-09-17 20:01 ` Ingo Molnar
2007-09-17 20:06 ` Oleg Verych
2007-09-17 20:05 ` Ingo Molnar
2007-09-17 20:42 ` Willy Tarreau
2007-09-17 13:05 ` Ingo Molnar
2007-09-17 14:01 ` [ck] " Jos Poortvliet
2007-09-17 14:12 ` Ingo Molnar
2007-09-17 20:36 ` Ingo Molnar
2007-09-18 4:30 ` Rob Hussey
2007-09-18 4:53 ` Willy Tarreau
2007-09-18 4:58 ` Rob Hussey
2007-09-18 6:40 ` Ingo Molnar
2007-09-18 8:23 ` Rob Hussey
2007-09-18 8:48 ` Ingo Molnar
2007-09-18 9:45 ` Rob Hussey
2007-09-18 9:48 ` Ingo Molnar
2007-09-18 1:44 ` Rob Hussey
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