From owner-freebsd-stable@FreeBSD.ORG Wed Feb 6 18:33:57 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F3CC316A420 for ; Wed, 6 Feb 2008 18:33:56 +0000 (UTC) (envelope-from kamikaze@bsdforen.de) Received: from mail.bsdforen.de (bsdforen.de [212.204.60.79]) by mx1.freebsd.org (Postfix) with ESMTP id 97B7F13C46A for ; Wed, 6 Feb 2008 18:33:56 +0000 (UTC) (envelope-from kamikaze@bsdforen.de) Received: from mobileKamikaze.norad (nat-wh-1.rz.uni-karlsruhe.de [129.13.72.169]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.bsdforen.de (Postfix) with ESMTP id 81DE8405C67 for ; Wed, 6 Feb 2008 19:11:02 +0100 (CET) Message-ID: <47A9F835.1060200@bsdforen.de> Date: Wed, 06 Feb 2008 19:11:01 +0100 From: Dominic Fandrey User-Agent: Thunderbird 2.0.0.9 (X11/20080205) MIME-Version: 1.0 To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: RELENG_7: interrupt eating whole cpu core X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Feb 2008 18:33:57 -0000 While ripping DVDs the irq14: ata0 eats ~95% of one of my cores. The channel is exclusive to the drive. # atacontrol list 64 /root ATA channel 0: Master: acd0 ATA/ATAPI revision 7 Slave: no device present ATA channel 1: Master: no device present Slave: no device present ATA channel 2: Master: ad4 Serial ATA v1.0 Slave: no device present ATA channel 3: Master: no device present Slave: no device present ATA channel 4: Master: no device present Slave: no device present The number of interrupts looks reasonable to me. # vmstat -i 0 /root interrupt total rate irq1: atkbd0 35171 1 irq9: acpi0 15729 0 irq12: psm0 10004 0 irq14: ata0 5148195 272 irq16: pcm0 uhci0 40783 2 irq17: uhci1+ 1446238 76 irq18: bge0 ehci0+ 38588 2 irq20: uhci2 ehci1 125447 6 irq21: uhci3 156783 8 cpu0: timer 37792079 1999 cpu1: timer 37784062 1999 Total 82593079 4370 I'm currently rebuilding world+kernel. I will report weather the behaviour has changed. This is an HP 6510b GR695EA#ABD, if anyone thinks it might be helpful, I can supply you with a dmesg and the output of pciconf -lv.