Message-ID: <3EF2144D.5060902@thai.com>
Date: Fri, 20 Jun 2003 02:51:41 +0700
From: Samphan Raruenrom <samphan@thai.com>
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To: Vojtech Pavlik <vojtech@suse.cz>
CC: linux-kernel@vger.kernel.org
Subject: Re: Crusoe's persistent translation on linux?
References: <3EF1E6CD.4040800@thai.com> <20030619200308.A2135@ucw.cz>
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Vojtech Pavlik wrote:
>>I'm using 2.4.21 kernel on TM5800 Crusoe in Compaq TC1000 Tablet PC.
>>Currently the performance is not very good but the more I learn
>>about its architecture the more I'm obessesed about it (just like
>>the days when I use 68000 Amiga). Too bad that there are very little
>>information about the chip so I can't do anything much to improve
>>the performance myself (like enlarge the translation cache? how?).
> How much 'not very good' is the performance? I'm considering buying an
> Sharp Actius MM10 notebook, and so far I wasn't able to find ANY numbers
> on how fast a 1GHz Crusoe actually is, nevermind with Linux running on
> it ... and how much running Linux affects the expected battery life.
> Can you share your experience?

See http://www.tabletpcbuzz.com/forum/topic.asp?TOPIC_ID=4451
The guy make a real world benchmark and conclude that a 1 GHZ TM5800
with latest CMS and PTT should be comparable with 1 GHZ PIIIm.
Normally TM5800 users will say it is comparable to 600-900 MHz PIII.

About running Linux on it. Application launch time is not good
(18 sec. to launch GNOME Help, 7 sec. to relaunch). But after that
it seems like linux GUI apps are more responsive.
Building software projects seem to take longer than it should be.
Building OpenOffice.org take more than 4 days while it take
about 1-2 days on PIII. I guess the CMS has to translate 'gcc'
on every invokation?  If so, can the kernel help in any way?

Battery life and Linux should be Ok. You'll have 'longrun' utility
to control cpu power consumption vs. performance. I understand
that the CPU already control its power consumption itself, even
without the help of the kernel, right?

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