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Message-ID: <20070612083620.GA10557@elte.hu>
Date: Tue, 12 Jun 2007 10:36:20 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Tobias Gerschner <tobias.gerschner@...il.com>
Cc: Miguel Figueiredo <elmig@...ianpt.org>,
linux kernel mailing list <linux-kernel@...r.kernel.org>,
ck@....kolivas.org
Subject: Re: call for more SD versus CFS comparisons (was: Re: [ck]
Mainline plans)
* Tobias Gerschner <tobias.gerschner@...il.com> wrote:
> I did run massive_intr.c for 60 secs with increasing nproc (
> 10,20,30,40,50,60) waiting for effects.
>
> Below a small table of the results
>
> 2.6.21.1-cfs-v16
>
> nproc , usability result
>
> 10 , serious frame drops , Firefox hardly recognizes clicked links,
> but still usable
> 20 - 30, usability loss ( somehow under cfs firefox never finished
> user requests like displaying web pages or opening new pages , no
> feedback anymore, sudden changes on the desktop )
ouch! The expected load-testing result under CFS should be something
like this:
http://bhhdoa.org.au/pipermail/ck/2007-June/007817.html
could you send me the output of /proc/sched_debug? (while say a
"massive_intr 20" is running?)
Roughly what hardware do you have? (could you send me your lspci -v
output and dmesg output?)
Ingo
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