From owner-freebsd-firewire@FreeBSD.ORG  Fri Jun 27 10:38:35 2003
Return-Path: <owner-freebsd-firewire@FreeBSD.ORG>
Delivered-To: freebsd-firewire@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 5538737B401
	for <freebsd-firewire@freebsd.org>;
	Fri, 27 Jun 2003 10:38:35 -0700 (PDT)
Received: from is2.mh.itc.u-tokyo.ac.jp (is2.mh.itc.u-tokyo.ac.jp
	[133.11.205.12])
	by mx1.FreeBSD.org (Postfix) with ESMTP id AF38243FBD
	for <freebsd-firewire@freebsd.org>;
	Fri, 27 Jun 2003 10:38:33 -0700 (PDT)
	(envelope-from simokawa@sat.t.u-tokyo.ac.jp)
Received: from is2.mh.itc.u-tokyo.ac.jp (is2.mh.itc.u-tokyo.ac.jp [127.0.0.1])
	by is2.mh.itc.u-tokyo.ac.jp (Postfix) with ESMTP id E376E3782D0
	for <freebsd-firewire@freebsd.org>;
	Sat, 28 Jun 2003 02:35:13 +0900 (JST)
Received: from mailhosting.itc.u-tokyo.ac.jp
	(IDENT:mirapoint@mailhosting.itc.u-tokyo.ac.jp [133.11.205.3])
	h5RHZDo4014301;	Sat, 28 Jun 2003 02:35:13 +0900
Received: from ett.sat.t.u-tokyo.ac.jp (ett.sat.t.u-tokyo.ac.jp
	[133.11.135.3])3.3.5-GR)	with ESMTP id AJC00766;
	Sat, 28 Jun 2003 02:35:12 +0900 (JST)
Date: Sat, 28 Jun 2003 02:35:12 +0900
Message-ID: <ybsptkzjuen.wl@ett.sat.t.u-tokyo.ac.jp>
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: Brian Candler <B.Candler@pobox.com>
In-Reply-To: <20030627110317.GA60951@uk.tiscali.com>
References: <20030627101841.GA60838@uk.tiscali.com>
	<20030627110317.GA60951@uk.tiscali.com>
User-Agent: Wanderlust/2.11.0 (Wonderwall) REMI/1.14.3 (Matsudai)
 FLIM/1.14.3 (=?ISO-8859-1?Q?Unebigory=F2mae?=) APEL/10.3 MULE XEmacs/21.4
 (patch 8) (Honest Recruiter) (i386--freebsd)
X-Face: OE([KxWyJI0r[R~S/>7ia}SJ)i%a,$-9%7{*yihQk|]gl}2p#"oXmX/fT}Bn7:
 #j7i14gu$jgR\S*&C3R/pJX<mI-4Z8'mqt1R'CjWdw-xqVoilv`\JgZcquM5oV
 uO^<vt/~051rCDM(`{rM~?{Okr,XC+}Ycm9IJO)odT*-0nyJjBJYzL{GsZ
MIME-Version: 1.0 (generated by REMI 1.14.3 - "Matsudai")
Content-Type: text/plain; charset=US-ASCII
cc: freebsd-firewire@freebsd.org
Subject: Re: Firewire resets/performance problems
X-BeenThere: freebsd-firewire@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Vendors pre-release coordination <freebsd-firewire.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-firewire>,
	<mailto:freebsd-firewire-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-firewire>
List-Post: <mailto:freebsd-firewire@freebsd.org>
List-Help: <mailto:freebsd-firewire-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-firewire>,
	<mailto:freebsd-firewire-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 27 Jun 2003 17:38:35 -0000

At Fri, 27 Jun 2003 12:03:17 +0100,
Brian Candler wrote:
> 
> On Fri, Jun 27, 2003 at 11:18:41AM +0100, Brian Candler wrote:
> > (1) Data transfer is extremely slow. Using 'dd' to read from /dev/da0, I get
> > perhaps 10MB per minute; using 'dd' to write is maybe 3MB per minute max.
> 
> Supplementary information:
> 
> My system also has a SCSI card with a couple of CD-ROMs on it, so that's
> scbus0 and the firewire is scbus1.
> 
> I just tried removing the SCSI card and the firewire is zooming along (8MB
> per second!)
> 
> This may or may not be a red herring - perhaps it's just the fact that I did
> a reboot - but is it possible that something is wrongly assuming the device
> to be on scbus0 when it's on scbus1 ?
> 
> Regards,
> 
> Bran.

I thinks there is no difference between scbus0 and scbus1 at CAM
layer. I suspect you have problem in PCI bus and removing the SCSI card
hides the problem.

You can easily exchange scbus 0 and 1 without removing the card by
adding the following line into the kernel config file.

device        scbus0 at sbp0

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html