From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753651AbXCPUmu (ORCPT ); Fri, 16 Mar 2007 16:42:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753653AbXCPUmu (ORCPT ); Fri, 16 Mar 2007 16:42:50 -0400 Received: from ottawa-hs-64-26-128-89.s-ip.magma.ca ([64.26.128.89]:3757 "EHLO mail.rtr.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753641AbXCPUmu (ORCPT ); Fri, 16 Mar 2007 16:42:50 -0400 Message-ID: <45FB0148.6050700@rtr.ca> Date: Fri, 16 Mar 2007 16:42:48 -0400 From: Mark Lord User-Agent: Thunderbird 1.5.0.10 (X11/20070221) MIME-Version: 1.0 To: John Coppens Cc: linux-kernel@vger.kernel.org Subject: Re: Conflict between ide and usb? References: <20070316154735.6de11eca.john@jcoppens.com> <45FAFCD9.5060207@rtr.ca> In-Reply-To: <45FAFCD9.5060207@rtr.ca> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Mark Lord wrote: > John Coppens wrote: > >> I installed ueagle-atm, which, by itself, is working fine with an >> MT-810 modem. >> >> 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. >> >> The machine is an AMD64, still in x86 mode though. CPU activity is very >> low during the copy, so it's not a CPU problem. Kernel is 2.6.20.2. APIC >> is enabled. No error message found in either /var/log/messages or syslog. >> DVD and HD are on different IDE interfaces. >> >> Can anyone suggest where to start looking for a solution? > .. >> 16: 2591 1737056 IO-APIC-fasteoi libata, HDA Intel >> 17: 41 1 IO-APIC-fasteoi libata, ehci_hcd:usb2 > .. > > It pretty much has to be an IRQ sharing issue, > most likely in the USB driver side of the house. Oh, wait a minute.. that's not the correct IRQ, is it? Your ueagle-atm must be on this one: 20: 90833792 3057782 IO-APIC-fasteoi ohci_hcd:usb1 In which case, it's not likely to be an interrupt sharing issue. Can you confirm this? Also, try moving your ueagle-atm to one of the ehci usb ports and see how that affects things.