From: Daniel Phillips <phillips@arcor.de>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Andrew Morton <akpm@digeo.com>,
Paolo Ciarrocchi <ciarrocchi@linuxmail.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: LMbench2.0 results
Date: Mon, 9 Sep 2002 18:16:11 +0200 [thread overview]
Message-ID: <E17oRCu-0006pL-00@starship> (raw)
In-Reply-To: <Pine.LNX.4.44L.0209091035470.1857-100000@imladris.surriel.com>
On Monday 09 September 2002 15:37, Rik van Riel wrote:
> On Sun, 8 Sep 2002, Daniel Phillips wrote:
>
> > I suspect the overall performance loss on the laptop has more to do with
> > several months of focussing exclusively on the needs of 4-way and higher
> > smp machines.
>
> Probably true, we're pulling off an indecent number of tricks
> for 4-way and 8-way SMP performance. This overhead shouldn't
> be too bad on UP and 2-way machines, but might easily be a
> percent or so.
Though to be fair, it's smart to concentrate on the high end with a
view to achieving world domination sooner. And it's a stretch to call
the low end performance 'slow'.
An idea that's looking more and more attractive as time goes by is to
have a global config option that specifies that we want to choose the
simple way of doing things wherever possible, over the enterprise way.
We want this especially for embedded. On low end processors, it's even
possible that the small way will be faster in some cases than the
enterprise way, due to cache effects.
--
Daniel
next prev parent reply other threads:[~2002-09-09 16:08 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-07 12:18 LMbench2.0 results Paolo Ciarrocchi
2002-09-07 12:27 ` Jeff Garzik
2002-09-07 18:53 ` Rik van Riel
2002-09-07 21:44 ` Alan Cox
2002-09-13 22:46 ` Pavel Machek
2002-09-07 14:33 ` James Morris
2002-09-09 22:22 ` Cliff White
2002-09-07 16:20 ` Andrew Morton
2002-09-07 20:03 ` William Lee Irwin III
2002-09-07 23:12 ` Andrew Morton
2002-09-07 23:01 ` William Lee Irwin III
2002-09-07 23:44 ` Martin J. Bligh
2002-09-08 17:07 ` Alan Cox
2002-09-08 18:11 ` Martin J. Bligh
2002-09-08 18:40 ` Andrew Morton
2002-09-08 20:48 ` Hugh Dickins
2002-09-08 21:51 ` Andrew Morton
2002-09-09 21:13 ` Alan Cox
2002-09-09 21:44 ` Andrew Morton
2002-09-09 22:09 ` Alan Cox
2002-09-08 7:51 ` Andrew Morton
2002-09-08 7:37 ` David S. Miller
2002-09-08 8:28 ` William Lee Irwin III
2002-09-08 8:25 ` David S. Miller
2002-09-08 9:12 ` William Lee Irwin III
2002-09-08 20:02 ` Daniel Phillips
2002-09-09 13:37 ` Rik van Riel
2002-09-09 16:16 ` Daniel Phillips [this message]
2002-09-09 16:26 ` Martin J. Bligh
2002-09-09 16:55 ` Daniel Phillips
2002-09-09 17:24 ` Martin J. Bligh
2002-09-09 21:11 ` Alan Cox
2002-09-09 16:52 ` Andrew Morton
2002-09-07 12:40 Paolo Ciarrocchi
2002-09-07 14:09 Shane Shrybman
2002-09-07 18:04 Paolo Ciarrocchi
2002-09-13 22:49 ` Pavel Machek
2002-09-07 18:09 Paolo Ciarrocchi
2002-09-08 7:51 ` Andrew Morton
2002-09-14 18:26 Paolo Ciarrocchi
2002-09-15 18:08 ` Pavel Machek
2002-09-22 12:42 Paolo Ciarrocchi
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