From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266575AbUGKMJO (ORCPT ); Sun, 11 Jul 2004 08:09:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266577AbUGKMJN (ORCPT ); Sun, 11 Jul 2004 08:09:13 -0400 Received: from astro.futurequest.net ([69.5.28.104]:36055 "HELO astro.futurequest.net") by vger.kernel.org with SMTP id S266575AbUGKMJL (ORCPT ); Sun, 11 Jul 2004 08:09:11 -0400 From: Daniel Schmitt To: linux-kernel@vger.kernel.org Subject: Re: [2.6.7] Ehci controller interrupts like crazy on nforce2 Date: Sun, 11 Jul 2004 14:09:09 +0200 User-Agent: KMail/1.6.2 References: <40EDF209.70707@yahoo.ca> In-Reply-To: <40EDF209.70707@yahoo.ca> Cc: Jonathan Filiatrault MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200407111409.09405.pnambic@unu.nu> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Friday 09 July 2004 03:16, Jonathan Filiatrault wrote: > Here it is: another nforce2 hardware bug. The ehci controller seems to > send a massive number of interrupts to the kernel (264379 per second). > This uses about 5 to 10% of the cpu. This shows up in top in the > "hi"(hard interrupts) indicator. Nothing unusual shows up in the kernel > log. My system has an Asus A7N8X Nforce2 Board with an Athlon XP 2800+ > mounted on it. I've seen this problem on my board (Epox 8RDA3+) as well. The root cause seems to be interrupt link devices enabled without regard for the actual device status. A recent patch that delayed IRQ assignment to device activiation time fixed this for me; you might want to try a fresh -mm or -bk kernel. Hope that helps, Daniel.