linux-kernel - Re: Sched - graphic smoothness under load

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Date:	Wed, 23 May 2007 01:21:12 -0700
From:	Bill Huey (hui) <billh@...ppy.monkey.org>
To:	Xavier Bestel <xavier.bestel@...e.fr>
Cc:	Michael Gerdau <mgd@...hnosis.de>,
	Con Kolivas <kernel@...ivas.org>,
	Bill Davidsen <davidsen@....com>,
	Miguel Figueiredo <elmig@...ianpt.org>,
	Ray Lee <ray-lk@...rabbit.org>,
	Linux Kernel M/L <linux-kernel@...r.kernel.org>,
	"Bill Huey (hui)" <billh@...ppy.monkey.org>
Subject: Re: Sched - graphic smoothness under load - cfs-v13 sd-0.48

On Wed, May 23, 2007 at 09:58:35AM +0200, Xavier Bestel wrote:
> On Wed, 2007-05-23 at 07:23 +0200, Michael Gerdau wrote:
> > For me the huge difference you have for sd to the others increases the
> > likelyhood the glxgears benchmark does not measure scheduling of graphic
> > but something else.
> 
> I think some people forget that X11 has its own scheduler for graphics
> operations.

OpenGL is generally orthogonal to X11 or at least should be. But this could
vary with the implementation depending on how brain damaged the system is.

I'd expect the performance charateristics to be different depending on what
subsystem is being used.

bill

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