From owner-freebsd-questions@FreeBSD.ORG Wed May 28 08:46:43 2003 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 87C7537B401 for ; Wed, 28 May 2003 08:46:43 -0700 (PDT) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id C08F843F93 for ; Wed, 28 May 2003 08:46:42 -0700 (PDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.9/8.12.9) id h4SFkgRp007287; Wed, 28 May 2003 10:46:42 -0500 (CDT) (envelope-from dan) Date: Wed, 28 May 2003 10:46:41 -0500 From: Dan Nelson To: Joseph Gleason Message-ID: <20030528154641.GB92409@dan.emsphone.com> References: <20030528141035.32200.qmail@web21204.mail.yahoo.com> <005201c3252a$72b05a00$08695f0a@frigate> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <005201c3252a$72b05a00$08695f0a@frigate> X-OS: FreeBSD 5.1-BETA X-message-flag: Outlook Error User-Agent: Mutt/1.5.4i cc: questions@freebsd.org cc: adrian kok Subject: Re: advice about copy from disk to disk 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: Wed, 28 May 2003 15:46:43 -0000 In the last episode (May 28), Joseph Gleason said: > I usually get better transfer rates with bs=16k or so. > > What transfer rate do you get? If they are modern drives (which 80gb > implies) you should get about 20-30MB/s. At that rate it should take > a little over an hour to transfer. > > To see the transfer start the dd, let it run for maybe 10-15 sec and > give it a Ctrl+c. It should print out its transfer rate thus far. Ctrl-T will send SIGINFO, which will make dd print its throughput without aborting. -- Dan Nelson dnelson@allantgroup.com