From: brian@worldcontrol.com
To: Dan Hollis <goemon@anime.net>
Cc: Linus Torvalds <torvalds@transmeta.com>, linux-kernel@vger.kernel.org
Subject: Athlon bug stomper: perf. results
Date: Wed, 19 Sep 2001 13:35:39 -0700 [thread overview]
Message-ID: <20010919133539.A11184@top.worldcontrol.com> (raw)
In-Reply-To: <9oafeu$1o0$1@penguin.transmeta.com> <Pine.LNX.4.30.0109191141560.24917-100000@anime.net>
In-Reply-To: <Pine.LNX.4.30.0109191141560.24917-100000@anime.net>
On Wed, Sep 19, 2001 at 11:43:48AM -0700, Dan Hollis wrote:
> AFAIK noone has even tested it yet to see what it does to performance! Eg
> it might slow down memory access so that athlon-optimized memcopy is now
> slower than non-athlon-optimized memcopy. And if it turns out to be the
> case, we might as well just use the non-athlon-optimized memcopy instead
> of twiddling undocumented northbridge bits...
Ok. perhaps this will help:
System: AMD Duron 800Mhz Epox 8KAT3+ MB
I power cycled machine between tests:
Linux 2.4.9ac5 *without* althon bug stomper patch:
oopes to death on boot.
Linux 2.4.9ac5 with athlon bug stomper patch:
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
clear_page() tests
clear_page function 'warm up run' took 19854 cycles per page
clear_page function '2.4 non MMX' took 11991 cycles per page
clear_page function '2.4 MMX fallback' took 11857 cycles per page
clear_page function '2.4 MMX version' took 13666 cycles per page
clear_page function 'faster_clear_page' took 4853 cycles per page
clear_page function 'even_faster_clear' took 4819 cycles per page
copy_page() tests
copy_page function 'warm up run' took 19638 cycles per page
copy_page function '2.4 non MMX' took 23855 cycles per page
copy_page function '2.4 MMX fallback' took 24043 cycles per page
copy_page function '2.4 MMX version' took 19550 cycles per page
copy_page function 'faster_copy' took 10909 cycles per page
copy_page function 'even_faster' took 11333 cycles per page
Linux 2.2.19:
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
clear_page() tests
clear_page function 'warm up run' took 14658 cycles per page
clear_page function '2.4 non MMX' took 13254 cycles per page
clear_page function '2.4 MMX fallback' took 13099 cycles per page
clear_page function '2.4 MMX version' took 13005 cycles per page
clear_page function 'faster_clear_page' took 4913 cycles per page
clear_page function 'even_faster_clear' took 4887 cycles per page
copy_page() tests
copy_page function 'warm up run' took 19664 cycles per page
copy_page function '2.4 non MMX' took 26431 cycles per page
copy_page function '2.4 MMX fallback' took 26432 cycles per page
copy_page function '2.4 MMX version' took 19537 cycles per page
copy_page function 'faster_copy' took 11564 cycles per page
copy_page function 'even_faster' took 11467 cycles per page
--
Brian Litzinger <brian@worldcontrol.com>
Copyright (c) 2000 By Brian Litzinger, All Rights Reserved
next prev parent reply other threads:[~2001-09-19 20:26 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-18 14:51 [PATCH] Athlon bug stomper. Pls apply VDA
2001-09-18 15:43 ` Alan Cox
2001-09-20 4:56 ` Albert D. Cahalan
2001-09-18 17:45 ` Jeff Garzik
2001-09-18 21:39 ` Liakakis Kostas
2001-09-19 13:08 ` Re[2]: " VDA
2001-09-19 13:41 ` Liakakis Kostas
2001-09-19 13:47 ` Thomas Langås
2001-09-19 14:31 ` Liakakis Kostas
2001-09-19 14:43 ` Stefan Smietanowski
2001-09-19 14:55 ` Re[2]: " Jan Niehusmann
2001-09-19 14:57 ` Liakakis Kostas
2001-09-19 18:12 ` Alan Cox
2001-09-19 21:18 ` Re[2]: [PATCH] VIA " Aaron Tiensivu
2001-09-19 23:04 ` Roberto Jung Drebes
2001-09-19 23:41 ` Nicholas Knight
2001-09-19 16:00 ` Re[2]: [PATCH] Athlon " Linus Torvalds
2001-09-19 17:15 ` safemode
2001-09-19 18:22 ` Stefan Smietanowski
2001-09-19 23:41 ` Re[2]: " Nicholas Knight
2001-09-20 15:10 ` Marek Mentel
2001-09-19 18:43 ` Dan Hollis
2001-09-19 18:55 ` Arjan van de Ven
2001-09-19 19:00 ` Roberto Jung Drebes
2001-09-19 19:17 ` Arjan van de Ven
2001-09-19 20:16 ` Dan Hollis
2001-09-19 19:50 ` Ignacio Vazquez-Abrams
2001-09-19 20:01 ` Ignacio Vazquez-Abrams
2001-09-19 20:40 ` Ignacio Vazquez-Abrams
2001-09-19 21:43 ` safemode
2001-09-19 22:22 ` Brad Pepers
2001-09-19 22:28 ` Erno Kuusela
2001-09-19 20:36 ` Simen Thoresen
2001-09-19 20:37 ` Dan Hollis
2001-09-19 20:51 ` Simen Thoresen
2001-09-19 23:00 ` Roberto Jung Drebes
2001-09-19 20:36 ` Vojtech Pavlik
2001-09-19 20:57 ` Dan Hollis
2001-09-19 21:29 ` Vojtech Pavlik
2001-09-19 23:23 ` Luigi Genoni
2001-09-20 9:03 ` VDA
2001-09-19 18:58 ` Re[2]: " Roberto Jung Drebes
2001-09-19 20:35 ` brian [this message]
2001-09-19 20:30 ` Athlon bug stomper: perf. results Dan Hollis
2001-09-19 22:14 ` brian
2001-09-19 22:08 ` Dan Hollis
2001-09-21 0:46 ` Re[2]: [PATCH] Athlon bug stomper. Pls apply Pavel Machek
2001-09-20 0:19 ` Nicholas Knight
2001-09-20 1:27 ` Stefan Smietanowski
2001-09-20 9:54 ` Re[2]: " Liakakis Kostas
2001-09-19 23:04 ` Luigi Genoni
2001-09-19 14:05 ` Tom Diehl
2001-09-23 23:33 ` Jan Niehusmann
2001-09-24 15:44 ` bill davidsen
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