Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265658AbTFXETW (ORCPT ); Tue, 24 Jun 2003 00:19:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265659AbTFXETW (ORCPT ); Tue, 24 Jun 2003 00:19:22 -0400 Received: from twinlark.arctic.org ([168.75.98.6]:35732 "EHLO twinlark.arctic.org") by vger.kernel.org with ESMTP id S265658AbTFXETV (ORCPT ); Tue, 24 Jun 2003 00:19:21 -0400 Date: Mon, 23 Jun 2003 21:33:28 -0700 (PDT) From: dean gaudet To: Samphan Raruenrom cc: linux-kernel@vger.kernel.org Subject: Re: Crusoe's performance on linux? In-Reply-To: Message-ID: References: <3EF1E6CD.4040800@thai.com> <20030619200308.A2135@ucw.cz> <3EF2144D.5060902@thai.com> <20030619221126.B3287@ucw.cz> <3EF67AD4.4040601@thai.com> <20030623102623.A18000@ucw.cz> <3EF74DBF.6000703@thai.com> X-comment: visit http://arctic.org/~dean/legal for information regarding copyright and disclaimer. MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1828 Lines: 37 On Mon, 23 Jun 2003, dean gaudet wrote: > On Mon, 23 Jun 2003, Samphan Raruenrom wrote: > > > Desktop - Pentium III 1 G Hz 754 MB -> 10.x min. > > Tablet PC - Crusoe TM5800 1 GHz 731 MB -> 17.x min. ... > but i'm really guessing you're causing excessive disk i/o by having a > small memory system use a huge tmpfs... get rid of the tmpfs and you know a few other things occured to me -- you should use "vmstat 5" to find out if any disk i/o is occuring (not that if longrun is doing its job then the "idle%" for cpu statistic is completely useless -- longrun should be making it as close to 100% as possible) . i'm guessing you've got a desktop disk drive in your p3 system -- which almost certainly outperforms the laptop disk in the tablet pc... not only for reasons like platter transfer speed, and seek latency, but it's also possible your tablet isn't using anything faster than UDMA33 -- and in fact it's entirely possible you're not even using UDMA33. do something like "grep hda /var/log/dmesg" to see what the bootup messages said. try "hdparm -d /dev/hda" to see if dma is active -- and if it isn't, try "hdparm -d1 /dev/hda" to enable it. if that doesn't work then it's most likely you don't have the IDE driver necessary for your tablet -- try "lspci -v" and try to find your southbridge IDE controller... i don't recall which southbridge is in the tablet, many crusoe boxes have ALi southbridges which have a kernel driver, but i think the tablet has something other than ALi... if in doubt post here and i'm sure someone can point you to the right driver. -dean - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/