From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264702AbUDWDVO (ORCPT ); Thu, 22 Apr 2004 23:21:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264711AbUDWDVO (ORCPT ); Thu, 22 Apr 2004 23:21:14 -0400 Received: from rwcrmhc13.comcast.net ([204.127.198.39]:40408 "EHLO rwcrmhc13.comcast.net") by vger.kernel.org with ESMTP id S264702AbUDWDVL (ORCPT ); Thu, 22 Apr 2004 23:21:11 -0400 Date: Thu, 22 Apr 2004 23:21:09 -0400 From: Noel Maddy To: linux-kernel@vger.kernel.org Subject: IRQ21 flood on nForce2 Message-ID: <20040423032109.GA16569@uglybox.localnet> Reply-To: Noel Maddy Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Howdy, I'm getting over 100k interrupts/second on IRQ21 on an nForce2 motherboard any time I have a driver using that interrupt. Both ehci_hcd and intel_8x0 use that interrupt. When either or both modules are loaded, it looks like below. With no modules loaded, or with pci=noacpi, behavior is fine. I've filed more detail at buzilla, including dmidecode and acpidmp output: http://bugzilla.kernel.org/show_bug.cgi?id=2574 Seems like it'd be something with the ACPI/interrupt configuration, yes? Noel ------------- cat /proc/interrupts CPU0 0: 706031 IO-APIC-edge timer 1: 8 IO-APIC-edge i8042 2: 0 XT-PIC cascade 7: 0 IO-APIC-edge parport0 8: 4 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 12: 50 IO-APIC-edge i8042 14: 4742 IO-APIC-edge ide0 18: 0 IO-APIC-level EMU10K1 19: 3 IO-APIC-level Bt87x audio, bttv0 20: 76147 IO-APIC-level ohci_hcd, eth0 21: 104487700 IO-APIC-level ehci_hcd, NVidia nForce2 22: 0 IO-APIC-level ohci_hcd NMI: 0 LOC: 705958 ERR: 0 MIS: 0 vmstat 1 10 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 2 0 0 396560 5804 51848 0 0 77 25 27446 46 95 1 3 1 1 0 0 396560 5804 51848 0 0 0 0 117260 9 100 0 0 0 1 0 0 396560 5804 51848 0 0 0 0 117333 8 100 0 0 0 1 0 0 396560 5804 51848 0 0 0 0 117333 6 100 0 0 0 1 0 0 396560 5804 51848 0 0 0 0 117335 8 100 0 0 0 1 0 0 396560 5812 51848 0 0 0 60 117334 12 100 0 0 0 1 0 0 396568 5812 51848 0 0 0 0 117335 8 100 0 0 0 1 0 0 396568 5812 51848 0 0 0 0 117336 10 99 1 0 0 1 0 0 396568 5812 51848 0 0 0 0 117343 6 100 0 0 0 1 0 0 396568 5812 51848 0 0 0 0 117334 6 100 0 0 0 cat /proc/interrupts CPU0 0: 715191 IO-APIC-edge timer 1: 8 IO-APIC-edge i8042 2: 0 XT-PIC cascade 7: 0 IO-APIC-edge parport0 8: 4 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 12: 50 IO-APIC-edge i8042 14: 4744 IO-APIC-edge ide0 18: 0 IO-APIC-level EMU10K1 19: 3 IO-APIC-level Bt87x audio, bttv0 20: 77101 IO-APIC-level ohci_hcd, eth0 21: 105550345 IO-APIC-level ehci_hcd, NVidia nForce2 22: 0 IO-APIC-level ohci_hcd NMI: 0 LOC: 715119 ERR: 0 MIS: 0 -- In this American stoicism, all phenomena of business life however crooked or foolish work to the prosperity of the universe under a benign commercial Providence who is part the God of the Bible, and part pure money. -- James Buchan, Guardian Unltd, 2002-06-28 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ Noel Maddy