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From: Dieter =?iso-8859-15?q?N=FCtzel?= <Dieter.Nuetzel@hamburg.de>
Organization: DN
To: Ingo Molnar <mingo@elte.hu>,
        Linux Kernel List <linux-kernel@vger.kernel.org>
Subject: Re: [patch] O(1) scheduler, -H6
Date: Fri, 11 Jan 2002 18:30:27 +0100
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Cc: dan kelley <dkelley@otec.com>
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Ingo,

you are the man!
My 1 GHz Athlon II, 640 MB, is up and running with 2.4.17-O(1)-H6.
Writing this under KDE-2.2.2 (KMail) during
time nice +19 make -j40 modules
Max load was: 41,97

Great!

dbench 32 during artsd (noatun, KDE-2.2.2) playing Ogg-Vorbis
"show" hiccup when

artsd (two sub processes) are in
wait_on_p
rt_sigsus

and/or

dbench procs are in
get_reque
wait_on_b
do_journ (ReiserFS?)

Even when I renice both artsd procs I get hiccup.
  PID USER     PRI  NI PAGEIN  SIZE  RSS SHARE WCHAN     STAT %CPU %MEM   
TIME COMMAND
 4953 nuetzel    1 -19      0  7148 7148  4324 rt_sigsus S <   3.6  1.1   
0:04 artsd
 1048 nuetzel    1 -19   1280  7148 7148  4324 schedule_ S <   2.7  1.1   
0:24 artsd

But when I put the Ogg-Vorbis file into /dev/shm I get _NO_ hiccup anymore!!!
So it is only disk IO limited with your O(1)-H6.

Wow, that is fantastic!!!
Never had that before.
Writing during both...;-)

Redid it without renice (-19):
some very few short hiccup.

-Dieter

-- 
Dieter N?tzel
Graduate Student, Computer Science

University of Hamburg
Department of Computer Science
@home: Dieter.Nuetzel@hamburg.de
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