From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753628AbXCPTwP (ORCPT ); Fri, 16 Mar 2007 15:52:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753626AbXCPTwO (ORCPT ); Fri, 16 Mar 2007 15:52:14 -0400 Received: from wr-out-0506.google.com ([64.233.184.228]:37224 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753621AbXCPTwN (ORCPT ); Fri, 16 Mar 2007 15:52:13 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=oeAc2e7qYp5QTA6j0IEZzHfqo/LRNCNbtTjeLpiAkHwXQWpGOlCt0bIAHTz+unv6Ft8TZD1LqiEwPHU40Mv01ArozM0DIvrMcJ+Ks9Ki4G/x5rvzR+ArrIDhPJ8onQ864xK/nxj4eMif+5YDY06j3Slq6GxXxu9nOB6+dD1pGZI= Message-ID: <75b66ecd0703161252l60dcbd81s3c9beb7cb91b6c14@mail.gmail.com> Date: Fri, 16 Mar 2007 15:52:12 -0400 From: "Lee Revell" To: "John Coppens" Subject: Re: Conflict between ide and usb? Cc: linux-kernel@vger.kernel.org In-Reply-To: <20070316154735.6de11eca.john@jcoppens.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070316154735.6de11eca.john@jcoppens.com> X-Google-Sender-Auth: dbefb52cea7ba5ba Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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. You can confirm it by forcing the hard drive and/or DVD drive to a lower speed if your BIOS allows it. Lee