From: Ingo Molnar <mingo@elte.hu>
To: Ed Tomlinson <edt@aei.ca>
Cc: davidsen@posidon.tmr.com, "Kolivas, Con" <kernel@kolivas.org>,
Linux Kernel M/L <linux-kernel@vger.kernel.org>
Subject: Re: [REPORT] First "glitch1" results, 2.6.21-rc7-git6-CFSv5 + SD 0.46
Date: Tue, 24 Apr 2007 08:57:09 +0200 [thread overview]
Message-ID: <20070424065709.GB19802@elte.hu> (raw)
In-Reply-To: <200704231949.06108.edt@aei.ca>
* Ed Tomlinson <edt@aei.ca> wrote:
> > SD 0.46 1-2 FPS
> > cfs v5 nice -19 219-233 FPS
> > cfs v5 nice 0 1000-1996
> cfs v5 nice -10 60-65 FPS
the problem is, the glxgears portion of this test is an _inverse_
testcase.
The reason? glxgears on true 3D hardware will _not_ use X, it will
directly use the 3D driver of the kernel. So by renicing X to -19 you
give the xterms more chance to show stuff - the performance of the
glxgears will 'degrade' - but that is what you asked for: glxgears is
'just another CPU hog' that competes with X, it's not a "true" X client.
if you are after glxgears performance in this test then you'll get the
best performance out of this by renicing X to +19 or even SCHED_BATCH.
Ingo
next prev parent reply other threads:[~2007-04-24 6:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-23 21:57 [REPORT] First "glitch1" results, 2.6.21-rc7-git6-CFSv5 Bill Davidsen
2007-04-23 23:45 ` [REPORT] First "glitch1" results, 2.6.21-rc7-git6-CFSv5 + SD 0.46 Ed Tomlinson
2007-04-23 23:49 ` Ed Tomlinson
2007-04-24 6:57 ` Ingo Molnar [this message]
2007-04-26 22:00 ` Bill Davidsen
2007-04-26 22:56 ` Con Kolivas
2007-04-27 2:52 ` Ed Tomlinson
2007-04-27 18:22 ` Bill Davidsen
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