From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261842AbVGENPU (ORCPT ); Tue, 5 Jul 2005 09:15:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261845AbVGENPU (ORCPT ); Tue, 5 Jul 2005 09:15:20 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:30858 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S261842AbVGENJb (ORCPT ); Tue, 5 Jul 2005 09:09:31 -0400 Subject: Re: [git patches] IDE update From: Jens Axboe To: Ondrej Zary Cc: =?ISO-8859-1?Q?Andr=E9?= Tomt , Al Boldi , "'Bartlomiej Zolnierkiewicz'" , "'Linus Torvalds'" , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <42CA84DB.2050506@rainbow-software.org> References: <200507042033.XAA19724@raad.intranet> <42C9C56D.7040701@tomt.net> <42CA5A84.1060005@rainbow-software.org> <20050705101414.GB18504@suse.de> <42CA5EAD.7070005@rainbow-software.org> <20050705104208.GA20620@suse.de> <42CA7EA9.1010409@rainbow-software.org> <1120567900.12942.8.camel@linux> <42CA84DB.2050506@rainbow-software.org> Content-Type: text/plain Date: Tue, 05 Jul 2005 15:11:35 +0200 Message-Id: <1120569095.12942.11.camel@linux> Mime-Version: 1.0 X-Mailer: Evolution 2.2.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2005-07-05 at 15:02 +0200, Ondrej Zary wrote: > > Ok, looks alright for both. Your machine is quite slow, perhaps that is > > showing the slower performance. Can you try and make HZ 100 in 2.6 and > > test again? 2.6.13-recent has it as a config option, otherwise edit > > include/asm/param.h appropriately. > > > > I forgot to write that my 2.6.12 kernel is already compiled with HZ 100 > (it makes the system more responsive). > I've just tried 2.6.8.1 with HZ 1000 and there is no difference in HDD > performance comparing to 2.6.12. OK, interesting. You could try and boot with profile=2 and do # readprofile -r # dd if=/dev/hda of=/dev/null bs=128k # readprofile > prof_output for each kernel and post it here, so we can see if anything sticks out. -- Jens Axboe