linux-kernel - Re: [ck] [PATCH] sched: staircase deadline misc fixes

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Date:	Sun, 1 Apr 2007 22:03:08 +0200
From:	Prakash Punnoor <prakash@...noor.de>
To:	"michael chang" <thenewme91@...il.com>
Cc:	ck@....kolivas.org, "linux list" <linux-kernel@...r.kernel.org>
Subject: Re: [ck] [PATCH] sched: staircase deadline misc fixes

Am Sonntag 01 April 2007 schrieb michael chang:
> On 4/1/07, Prakash Punnoor <prakash@...noor.de> wrote:
> > Am Mittwoch 28 März 2007 schrieb Prakash Punnoor:

> > >
> > > Hi, I am using 2.6.21-rc5 with rsdl 0.37 and think I still see a
> > > regression with my Athlon X2. Namely using this ac3 encoder
> > > (http://aften.sourceforge.net/), which I parallelized in a simple way,
> > > with my test sample I remember having encoding times of ~5.4sec with
> > > vanilla and ~5.8 sec with rsdl - once the whole test wave is in cache.

> > BTW, I confirmed this regression. With vanilla 2.76.21-rc5 I get back my
> > 5.4 secs with the test sample and two threads. Furtmermore for me vanilla
>
> Which version of RSDL were you comparing to 2.6.21-rc5? Did you try
> the patch in the first message (http://lkml.org/lkml/2007/3/28/146)?
> The patch that _began_ this thread had SMP fixes in it... (Also, IIRC,
> the latest version of the scheduler no longer has the rotating
> component - so it's just SDl now.)

As I said, I tried 0.37. Didn't it have the fix inside? Actually I am 
reluctant to go back to (r)sdl, as it didn't show improvements for me, yet.

-- 
(°=                 =°)
//\ Prakash Punnoor /\\
V_/                 \_V

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