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From: Ingo Molnar <mingo@elte.hu>
To: Tobias Gerschner <tobias.gerschner@gmail.com>
Cc: Miguel Figueiredo <elmig@debianpt.org>,
	linux kernel mailing list <linux-kernel@vger.kernel.org>,
	ck@vds.kolivas.org
Subject: Re: call for more SD versus CFS comparisons (was: Re: [ck] Mainline plans)
Date: Tue, 12 Jun 2007 10:36:20 +0200	[thread overview]
Message-ID: <20070612083620.GA10557@elte.hu> (raw)
In-Reply-To: <ea7e82ce0706120039n675a361emc214b2ecca964b75@mail.gmail.com>


* Tobias Gerschner <tobias.gerschner@gmail.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

  reply	other threads:[~2007-06-12  8:36 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-12  0:30 call for more SD versus CFS comparisons (was: Re: [ck] Mainline plans) Miguel Figueiredo
2007-06-12  7:39 ` Tobias Gerschner
2007-06-12  8:36   ` Ingo Molnar [this message]
2007-06-12  8:51     ` Tobias Gerschner
2007-06-12  8:55       ` Ingo Molnar
2007-06-12  8:57     ` Ingo Molnar
2007-06-12 10:33       ` Con Kolivas
2007-06-12 10:40         ` Ingo Molnar
2007-06-12 14:04   ` Ingo Molnar
2007-06-12 16:52 ` Martin Steigerwald
2007-06-15 21:19   ` Miguel Figueiredo
2007-06-13  1:36 ` Fortier,Vincent [Montreal]
2007-06-13  1:54   ` Fortier,Vincent [Montreal]
2007-06-14  7:56     ` call for more SD versus CFS comparisons (was: " Jarek Poplawski
  -- strict thread matches above, loose matches on Subject: below --
2007-06-14 10:10 call for more SD versus CFS comparisons (was: Re: [ck] " Tobias Gerschner

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