From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263128AbTJ0P4g (ORCPT ); Mon, 27 Oct 2003 10:56:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263275AbTJ0P4g (ORCPT ); Mon, 27 Oct 2003 10:56:36 -0500 Received: from savages.net ([12.154.202.18]:26017 "EHLO savages.net") by vger.kernel.org with ESMTP id S263128AbTJ0P4d (ORCPT ); Mon, 27 Oct 2003 10:56:33 -0500 Message-ID: <3F9D402F.9050509@savages.net> Date: Mon, 27 Oct 2003 07:56:31 -0800 From: Shaun Savage User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031016 X-Accept-Language: en-us, en MIME-Version: 1.0 To: jgarzik@pobox.com, linux-kernel@vger.kernel.org, edt@aei.ca, nuno.silva@vgertech.com Subject: Re: kernel 2.6t9 SATA slower than 2.4.20 X-Enigmail-Version: 0.76.7.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >Are you using CONFIG_SCSI_SATA in 2.6? No, but I am trying now. GREAT is works, but the disk went from hda back to hde > Jeff =================================================================== >I bet it's the "beat to death in lkml" issue with readahead. >What's the output of cat /proc/ide/hdX? it hda see attached file "proc_ide_hda" now the disk is hde again, do you want another proc files file? >Regards, >Nuno Silva -------------------------------------------------------------------- >What happens with you really test? ie. using programs (bonnie, iozone etc) >to test disk speed? Is it still slower? I think that hdparm does not >tell the complete >story. No I have not but I will. But I assume that from 55M to 15M something is not configured correct. >Ed Tomlinson --------------------------------------------------------------------- > I have just compiled and installed kernel 2.6t9 on my RH9 / Asus A7N8X Deluxe. I find the disk access is slower using the 2.6 kernel than the 2.4.20 kernel. > > To get it to work for 2.4.20 kernel I have to use > # hdparm -d1 -X88 /dev/hde > then the buffered disk read goes from 1.5M to 55M > > On the 2.6 kernel the buffered disk read is only 16M > > What do I have to do to increase the disk speed for kernel 2.6t9? > I