From owner-freebsd-questions@FreeBSD.ORG Tue Mar 2 09:19:04 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4416716A4CE for ; Tue, 2 Mar 2004 09:19:04 -0800 (PST) Received: from out010.verizon.net (out010pub.verizon.net [206.46.170.133]) by mx1.FreeBSD.org (Postfix) with ESMTP id EB5C243D2D for ; Tue, 2 Mar 2004 09:19:03 -0800 (PST) (envelope-from cswiger@mac.com) Received: from mac.com ([68.161.120.219]) by out010.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20040302171903.RWGH26728.out010.verizon.net@mac.com>; Tue, 2 Mar 2004 11:19:03 -0600 Message-ID: <4044C1FD.10903@mac.com> Date: Tue, 02 Mar 2004 12:18:53 -0500 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Guy Van Sanden References: <1078149483.6895.7.camel@cronos.home.vsb> <404360B6.7010809@natzo.com> <1078158992.25271.2.camel@cronos.home.vsb> <1627CFD6-6BAB-11D8-A797-003065ABFD92@mac.com> <1078214515.3868.3.camel@cronos.home.vsb> In-Reply-To: <1078214515.3868.3.camel@cronos.home.vsb> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Authentication-Info: Submitted using SMTP AUTH at out010.verizon.net from [68.161.120.219] at Tue, 2 Mar 2004 11:19:03 -0600 cc: Free BSD Questions list Subject: Re: USB 2.0 harddisk performance X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Mar 2004 17:19:04 -0000 Guy Van Sanden wrote: [ ...in reference to USB 2 vs Firewire performance... ] > Thanks for your answer. You're welcome. > I was googling for this, and I found out that you need some modules: > firewire.c fwohci.c fwohci_pci.c Yes, although FreeBSD 4.9 should have come with the module already compiled and available for use. See whether you have: /modules/firewire.ko ...on your system, otherwise add a "device firewire" and rebuild your kernel. I've used both the VIA 6306 and whatever Creative uses on the SB Audigy (Sony 3022? I forget)... > Will the fwohci driver provide better perfomance then the USB one? Right now it certainly does. I was seeing data-level throughput of ~40 MB/s or 320 megabits per sec, which is ~80% utilization of the maximum available throughput of 400 mb/s. I don't know how much protocol-level overhead is involved, but there is undoubtedly some so it seems the Firewire driver works about as efficiently as one might wish. [ Bravo, Kobayashi-san and Shimokawa-san... ] -- -Chuck