From: Andrew Morton <akpm@osdl.org>
To: Andreas Hartmann <andihartmann@freenet.de>
Cc: mason@suse.com, linux-kernel@vger.kernel.org
Subject: Re: Very poor performance with 2.6.4
Date: Fri, 2 Apr 2004 02:23:48 -0800 [thread overview]
Message-ID: <20040402022348.00d55268.akpm@osdl.org> (raw)
In-Reply-To: <406D21F6.8080005@A88c0.a.pppool.de>
Andreas Hartmann <andihartmann@freenet.de> wrote:
>
> Now, I tested 2.6.5-rc3-mm4. Same procedure.
> The good news first:
> 2.6.5-rc3-mm4 is nearly as fast as 2.4.25 - it is about 2% slower than
> 2.4.25 (with preemption turned on).
>
> Now the bad news:
> The system-processor-time is unchanged abnormal high: it is 34% (!) higher
> than in 2.4.25 (and about 1% more than in 2.4.6).
>
>
> Btw: Did the other profile outputs help to find the problem?
>
> These are the profile-values for an example run (make of kernel 2.6.5rc2)
> with 2.6.5rc3mm4:
Spending a lot of time on do_softirq() while compiling stuff is peculiar.
What device drivers are running at the time? disk/network/usb/etc?
next prev parent reply other threads:[~2004-04-02 10:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-28 20:02 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 [this message]
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
[not found] <1EOM0-3oS-17@gated-at.bofh.it>
2004-03-28 22:47 ` Andi Kleen
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