From owner-freebsd-current@FreeBSD.ORG Wed Jan 18 23:02:18 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 39D0916A41F for ; Wed, 18 Jan 2006 23:02:18 +0000 (GMT) (envelope-from b.candler@pobox.com) Received: from thorn.pobox.com (thorn.pobox.com [208.210.124.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6AC5C43D46 for ; Wed, 18 Jan 2006 23:02:17 +0000 (GMT) (envelope-from b.candler@pobox.com) Received: from thorn (localhost [127.0.0.1]) by thorn.pobox.com (Postfix) with ESMTP id 7164DFE; Wed, 18 Jan 2006 18:02:38 -0500 (EST) Received: from mappit.local.linnet.org (212-74-113-67.static.dsl.as9105.com [212.74.113.67]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by thorn.sasl.smtp.pobox.com (Postfix) with ESMTP id 33E627A5A; Wed, 18 Jan 2006 18:02:37 -0500 (EST) Received: from lists by mappit.local.linnet.org with local (Exim 4.60 (FreeBSD)) (envelope-from ) id 1EzMJh-0009iu-KE; Wed, 18 Jan 2006 23:02:13 +0000 Date: Wed, 18 Jan 2006 23:02:13 +0000 From: Brian Candler To: Dread Pirate Mal Message-ID: <20060118230213.GA37284@uk.tiscali.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Cc: freebsd-current@freebsd.org Subject: Re: Abysmal performance on external usb drive 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: Wed, 18 Jan 2006 23:02:18 -0000 On Fri, Jan 13, 2006 at 12:34:38PM -0800, Dread Pirate Mal wrote: > I'm seeing -really- terrible performance with an external usb drive on > my freebsd 5.4 machine. It's a matrox one-touch being attached as the only > device on port 0 of an Intel S845W based system. And yes, I do have > ehci compiled in and the most current bios for the board :). You think *that's* terrible? Here's my cheapo 128M flash MP3 player: umass0: EM102I Mp3 Player, rev 1.10/0.12, addr 2 da0 at umass-sim0 bus 0 target 0 lun 0 da0: Removable Direct Access SCSI-0 device da0: 1.000MB/s transfers da0: 125MB (256000 512 byte sectors: 64H 32S/T 125C) Loading it up with data using a pre-prepared filesystem image so that it doesn't jump around the flash: # time dd if=desertisland1.img of=/dev/da0 bs=16k 8000+0 records in 8000+0 records out 131072000 bytes transferred in 698.433774 secs (187666 bytes/sec) 698.53 real 0.02 user 1.55 sys That's 1.5Mbps, which isn't very impressive :-(