From: Andi Kleen <ak@muc.de>
To: Andreas Hartmann <andihartmann@freenet.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Very poor performance with 2.6.4
Date: Mon, 29 Mar 2004 00:47:08 +0200 [thread overview]
Message-ID: <m3n060egib.fsf@averell.firstfloor.org> (raw)
In-Reply-To: <1EOM0-3oS-17@gated-at.bofh.it> (Andreas Hartmann's message of "Sun, 28 Mar 2004 22:10:32 +0200")
Andreas Hartmann <andihartmann@freenet.de> writes:
>
> Now, I switched off preemption. But the performance isn't much better:
> 8.8% (9.3% with preemption) more real-time compared to 2.4.25 and 28%
> (32.9% with preepmtion) more system-time.
Install oprofile and do a profile run on the 2.6 kernel. This should
tell you where the system time is wasted. Post the results on this
list.
-Andi
next parent reply other threads:[~2004-03-29 4:09 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1EOM0-3oS-17@gated-at.bofh.it>
2004-03-28 22:47 ` Andi Kleen [this message]
2004-03-28 20:02 Very poor performance with 2.6.4 Andreas Hartmann
2004-03-28 20:24 ` Matt H.
2004-03-28 21:11 ` Sasa U
2004-03-29 4:07 ` Andrew Morton
2004-03-29 6:16 ` Andreas Hartmann
2004-03-29 14:23 ` Chris Mason
2004-03-29 19:35 ` Andreas Hartmann
2004-03-29 19:42 ` Andreas Hartmann
2004-04-02 8:19 ` Andreas Hartmann
2004-04-02 10:23 ` Andrew Morton
2004-04-02 20:53 ` Andreas Hartmann
2004-04-02 21:13 ` Andrew Morton
2004-04-03 0:23 ` Andreas Hartmann
2004-03-29 17:41 ` Andreas Hartmann
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