From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261563AbUE0DxI (ORCPT ); Wed, 26 May 2004 23:53:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261568AbUE0DxI (ORCPT ); Wed, 26 May 2004 23:53:08 -0400 Received: from fw.osdl.org ([65.172.181.6]:9168 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S261563AbUE0DxG convert rfc822-to-8bit (ORCPT ); Wed, 26 May 2004 23:53:06 -0400 Date: Wed, 26 May 2004 20:52:25 -0700 From: Andrew Morton To: Antonio Larrosa =?ISO-8859-1?B?Smlt6W5leg==?= Cc: linux-kernel@vger.kernel.org Subject: Re: iowait problems on 2.6, not on 2.4 Message-Id: <20040526205225.7a0866aa.akpm@osdl.org> In-Reply-To: <200405261743.28111.antlarr@tedial.com> References: <200405261743.28111.antlarr@tedial.com> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Antonio Larrosa Jiménez wrote: > > My next test will be to do the "dd tests" on one of the internal hard disks > and use it for the data instead of the external raid. That's a logical next step. The reduced read bandwith on the raid array should be fixed up before we can go any further. I don't recall any reports of qlogic fc-scsi performance regressions though.