From owner-freebsd-current@FreeBSD.ORG Thu Jul 23 02:38:40 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 929AF106566C for ; Thu, 23 Jul 2009 02:38:40 +0000 (UTC) (envelope-from drew@mykitchentable.net) Received: from smtp1.mc.surewest.net (qsmtp.mc.surewest.net [66.60.130.145]) by mx1.freebsd.org (Postfix) with SMTP id 53CBE8FC19 for ; Thu, 23 Jul 2009 02:38:40 +0000 (UTC) (envelope-from drew@mykitchentable.net) Received: (qmail 8182 invoked from network); 22 Jul 2009 20:01:54 -0700 Received: by simscan 1.1.0 ppid: 8159, pid: 8162, t: 2.2517s scanners: regex: 1.1.0 attach: 1.1.0 spam: 3.1.7-deb X-Spam-Checker-Version: SpamAssassin 3.1.7-deb (2006-10-05) on smtp1.surewest.net X-Spam-Level: X-Spam-Status: No, score=0.0 required=10.0 tests=none autolearn=disabled version=3.1.7-deb X-Spam-CMAE-Analysis: v=1.0 c=1 a=0fHVTxLUsUkA:10 a=jDt-9pEAAAAA:8 a=1NGZCLlUl76i1h-bwFQA:9 a=wamyKHXLWoqfyGuobw0PJ4k8ToUA:4 Received: from unknown (HELO blacklamb.mykitchentable.net) (69.62.230.77) by smtp1 with SMTP; 22 Jul 2009 20:01:52 -0700 Received: from [192.168.2.3] (unknown [192.168.2.3]) by blacklamb.mykitchentable.net (Postfix) with ESMTPA id AC80316550C for ; Wed, 22 Jul 2009 19:38:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mykitchentable.net; s=default; t=1248316716; bh=0TklqlReeCm6wb6zT3NaRdjwggHL3j7MlVgZV0U57Vc=; h=Message-ID:Date:From:MIME-Version:To:Subject:Content-Type: Content-Transfer-Encoding; b=GP5Q1DV70shx/FWNV78N0/mXQEZPa4E0GgfW/fiPkpVxbwqAVczBULeoqGWiDWcjC 1bXOVHJgG+EL41Q5E/QPHGazb74XcopXPlRi7prZTxjHsBxb2flpM0mDaWVIm+ppVl NRuKzhr0lyugTJVVpbZmJlDLtrA20CjzdPLhPWWc= Message-ID: <4A67CD2B.9040200@mykitchentable.net> Date: Wed, 22 Jul 2009 19:38:35 -0700 From: Drew Tomlinson User-Agent: Thunderbird 2.0.0.22 (X11/20090717) MIME-Version: 1.0 To: FreeBSD current Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: USB 2.0 External Drive - What Is A Reasonable Transfer Rate? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Jul 2009 02:38:40 -0000 I have a USB 2.0 external drive that's formatted as NTFS under Windows XP. I've plugged it into my 8.0 BETA2 install and am copying files to a local raid1z zpool with one vdev consisting of 4 drives. I'm trying to move about 100 GB of assorted files and have been at it all day. The USB drive contains assorted files such as mp3, CD/DVD images, zip, documents, etc. I'm guessing most files range between 1 - 4 MB with some as large as 4 GB. Anyway, iostat shows the transfer rate at around 2 - 3 MB per second. Is this all I should expect from a USB 2.0 drive? Is there anything I can do to speed this up? Thanks, Drew -- Be a Great Magician! Visit The Alchemist's Warehouse http://www.alchemistswarehouse.com