From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264104AbTLUTei (ORCPT ); Sun, 21 Dec 2003 14:34:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264106AbTLUTei (ORCPT ); Sun, 21 Dec 2003 14:34:38 -0500 Received: from mxfep02.bredband.com ([195.54.107.73]:16271 "EHLO mxfep02.bredband.com") by vger.kernel.org with ESMTP id S264104AbTLUTea (ORCPT ); Sun, 21 Dec 2003 14:34:30 -0500 To: Ben Collins Cc: linux-kernel@vger.kernel.org Subject: Re: Firewire/sbp2 troubles with Linux 2.6.0 References: <20031221035348.GM6607@phunnypharm.org> <20031221144813.GN6607@phunnypharm.org> <20031221183132.GP6607@phunnypharm.org> <20031221184840.GR6607@phunnypharm.org> From: mru@kth.se (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=) Date: Sun, 21 Dec 2003 20:34:28 +0100 In-Reply-To: <20031221184840.GR6607@phunnypharm.org> (Ben Collins's message of: 48:40 -0500") Message-ID: User-Agent: Gnus/5.1002 (Gnus v5.10.2) XEmacs/21.4 (Rational FORTRAN, linux) 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 Ben Collins writes: >> > As far as 10mbs, you have to remember that even though firewire is much >> > higher than that, your drive is still an IDE, and the firewire is still >> > going through an IDE bridge. So the limitation lies in the IDE bridge. >> > I've seen performance as high as 34MB/s with good IDE bridges and >> > drives, though. >> >> The disks will easily do 40 MB/s on a good IDE controller. It seems >> like a rather bad bridge to me if it has that much overhead. I >> haven't seen many different options for sale, either. > > Most things based on newer Oxford chips seem to work pretty well. What > ohci1394 controller do you have though? I have this: 00:0a.2 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (prog-if 10 [OHCI]) Subsystem: Asustek Computer, Inc.: Unknown device 1687 Flags: bus master, medium devsel, latency 32, IRQ 11 Memory at e5800000 (32-bit, non-prefetchable) [size=2K] Capabilities: -- Måns Rullgård mru@kth.se