linux-kernel - Re: [patch] CFS scheduler, -v11

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Message-ID: <20070510200500.GB18741@elte.hu>
Date:	Thu, 10 May 2007 22:05:00 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Christian <christiand59@....de>
Cc:	linux-kernel@...r.kernel.org, Kasper Sandberg <lkml@...anurb.dk>
Subject: Re: [patch] CFS scheduler, -v11


* Christian <christiand59@....de> wrote:

> > > Desktop performance without any manual renicing is excellent, even 
> > > with make -j20. Gaming performance is at least on par with SD now! 
> > > I've tried to
> >
> > Which games are you trying? and have you tried other workloads then 
> > make -j20?
> >
> > try have a window with some 3d game open, and a browser besides it, 
> > and press a link. i cant seem to get smooth results with CFS.
[...]
> 
> I've tried many different workloads, kernel compile (normal -j4), 
> extreme kernel compile (-j20) and Browsing/Open Office. GLXGears, 
> Briquolo and enemy-territory work relly well under these loads.

do you have CONFIG_PREEMPT enabled - while perhaps Kasper has it 
disabled? Kasper, if so, could you try a quick test with CONFIG_PREEMPT 
enabled, does that make any difference to your gaming-smoothness 
results? [it's not a real solution, but this would help us narrow down 
the smoothness problem you are seeing.]

	Ingo
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