From owner-freebsd-hackers@FreeBSD.ORG Tue Mar 22 09:14:26 2005 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3C98116A4CE for ; Tue, 22 Mar 2005 09:14:26 +0000 (GMT) Received: from peedub.jennejohn.org (Jbcc9.j.pppool.de [85.74.188.201]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5F29443D2D for ; Tue, 22 Mar 2005 09:14:25 +0000 (GMT) (envelope-from garyj@jennejohn.org) Received: from jennejohn.org (localhost [127.0.0.1]) by peedub.jennejohn.org (8.13.3/8.11.6) with ESMTP id j2M9Dv4a003840; Tue, 22 Mar 2005 10:13:58 +0100 (CET) (envelope-from garyj@jennejohn.org) Message-Id: <200503220913.j2M9Dv4a003840@peedub.jennejohn.org> X-Mailer: exmh version 2.7.0 06/18/2004 with nmh-1.0.4 To: ticso@cicely.de In-Reply-To: Message from Bernd Walter <20050322085033.GR53520@cicely12.cicely.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 22 Mar 2005 10:13:57 +0100 From: Gary Jennejohn X-Mailman-Approved-At: Tue, 22 Mar 2005 13:23:20 +0000 cc: hackers cc: Carlos Silva aka|Danger_Man| cc: Julian Elischer Subject: Re: USB 2.0 with bogus Data Rate X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Mar 2005 09:14:26 -0000 Bernd Walter writes: > On Mon, Mar 21, 2005 at 11:42:40PM +0000, Carlos Silva aka|Danger_Man| wrote: > > Here is the rate: > > > > osiris# dd if=/dev/da0 of=/dev/null bs=64k > > ^C16+0 records in > > 16+0 records out > > 1048576 bytes transferred in 14.741515 secs (71131 bytes/sec) > > osiris# > > Are you shure that the device is really a high speed one? > USB 2.0 doesn't explizitly mean this. > In the list below it looks like the device is handled by an VIA > uhci controller - that is definitivley full speed only. > usbdevs -v will show you details about the current detection. > Moreover VIA controllers are known to cause problems. > But it's even much too slow for full speed. > There must be something elese - e.g. an IRQ problem. > The best choise would be to replace the controller with an NEC based > one. > Could also be a setting in the BIOS. Mine lets you choose between USB 1 and USB 2 speeds for the EHCI controller. I have: ehci0: --- Gary Jennejohn / garyj[at]jennejohn.org gj[at]freebsd.org garyj[at]denx.de