From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261376AbTKOJIf (ORCPT ); Sat, 15 Nov 2003 04:08:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261569AbTKOJIf (ORCPT ); Sat, 15 Nov 2003 04:08:35 -0500 Received: from mail.gmx.net ([213.165.64.20]:45729 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S261376AbTKOJIe (ORCPT ); Sat, 15 Nov 2003 04:08:34 -0500 X-Authenticated: #4512188 Message-ID: <3FB5EDC1.8010805@gmx.de> Date: Sat, 15 Nov 2003 10:11:29 +0100 From: "Prakash K. Cheemplavam" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.5) Gecko/20031007 X-Accept-Language: de-de, de, en-us, en MIME-Version: 1.0 To: Marcus Hartig , linux-kernel@vger.kernel.org Subject: Re: 2.6.0-test9 /-mm3 SATA siimage - bad disk performance References: <3FB5B74E.5080707@marcush.de> In-Reply-To: <3FB5B74E.5080707@marcush.de> 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 Marcus Hartig wrote: > Hello all, > > with the Fedora 1 kernel 2.4.22-1.2115.nptl I get with hdparm -t > (Timing buffered disk reads) 34 MB/sec. Its very slow for this drive. > > With 2.6.0-test9 and -mm3 I get around "62 MB in 3.05 = 20,31". Wow" > Back to ~1998? I have a similar problem: With 2.4.22-ac3 I had 37mb/sec with my Samsung HD and 49MB/sec with IBM/Hitachi, now with 2.6 (all I tried, including test9-mm2) I had only 20mb/sec for Samsung and about 39mb/sec for the IBM. Motherboard is Abit NF7-S Rev2.0, as well, so same situation with the siimage 1.06 driver. I wanted to run some dd tests as well, but it is a real performance hit. Playing with readahead or other hdparm options didn't help either. Prakash