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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=m3n060egib.fsf@averell.firstfloor.org \
--to=ak@muc.de \
--cc=andihartmann@freenet.de \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.