From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933227AbXCPUM6 (ORCPT ); Fri, 16 Mar 2007 16:12:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933304AbXCPUM6 (ORCPT ); Fri, 16 Mar 2007 16:12:58 -0400 Received: from mailbigip.dreamhost.com ([208.97.132.5]:52885 "EHLO swarthymail-a2.g.dreamhost.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933227AbXCPUM5 (ORCPT ); Fri, 16 Mar 2007 16:12:57 -0400 X-Greylist: delayed 5118 seconds by postgrey-1.27 at vger.kernel.org; Fri, 16 Mar 2007 16:12:57 EDT Date: Fri, 16 Mar 2007 17:12:53 -0300 From: John Coppens To: "Lee Revell" Cc: linux-kernel@vger.kernel.org Subject: Re: Conflict between ide and usb? Message-Id: <20070316171253.2014deaf.john@jcoppens.com> In-Reply-To: <75b66ecd0703161252l60dcbd81s3c9beb7cb91b6c14@mail.gmail.com> References: <20070316154735.6de11eca.john@jcoppens.com> <75b66ecd0703161252l60dcbd81s3c9beb7cb91b6c14@mail.gmail.com> X-Mailer: Sylpheed 2.3.1 (GTK+ 2.8.20; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 16 Mar 2007 15:52:12 -0400 "Lee Revell" wrote: > On 3/16/07, John Coppens wrote: > > The problem I have, is that when I copy a file from a DVD to harddisk, > > the internet connection almost dies (it slows down terribly, so much > > so that established connections actually disconnect, ping looses > > packets, DNS lookup fails, etc). After copy ends, all returns to > > normal. > > Sounds like DMA starvation, it's been seen in the past with some SATA > controllers. Presumably vendors do it to improve benchmark scores. Hi Lee. In this case SATA isn't used, as the copy is from IDE to IDE. But I doubt bandwidth has anything to do with it. The DVD transfer rate rarely reaches 3.3 MB/s - which by itself isn't normal. > You can confirm it by forcing the hard drive and/or DVD drive to a > lower speed if your BIOS allows it. No... I didn't find any way to lower the speed. Thanks John