From owner-freebsd-questions@FreeBSD.ORG Thu Feb 2 02:33:29 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6F16B16A420 for ; Thu, 2 Feb 2006 02:33:29 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 076AF43D45 for ; Thu, 2 Feb 2006 02:33:29 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id 6D3775CC7; Wed, 1 Feb 2006 21:33:28 -0500 (EST) Received: from pi.codefab.com ([127.0.0.1]) by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 13065-06; Wed, 1 Feb 2006 21:33:27 -0500 (EST) Received: from [192.168.1.3] (pool-68-161-67-226.ny325.east.verizon.net [68.161.67.226]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pi.codefab.com (Postfix) with ESMTP id A947B5CC1; Wed, 1 Feb 2006 21:33:26 -0500 (EST) Message-ID: <43E16F75.3030406@mac.com> Date: Wed, 01 Feb 2006 21:33:25 -0500 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: Garrett Cooper References: <52A0A2E7-CEA6-45E1-9EAF-E8438D869EBB@u.washington.edu> In-Reply-To: <52A0A2E7-CEA6-45E1-9EAF-E8438D869EBB@u.washington.edu> X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at codefab.com Cc: FreeBSD Questions Subject: Re: "Interrupt storm"?! X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Feb 2006 02:33:29 -0000 Garrett Cooper wrote: [ ... ] > Interrupt storm detected on "irq11: ahc0"; throttling interrupt source > ahc0: PCI error Interrupt at seqaddr = 0x9 > ach0: Data Parity Error Detected during address or write data phase > > Any ideas what this means? > ahc0 is the dev name for my adaptec scsi card. I also had some > issues just a little earlier with RAM and the slot on the motherboard I > was using (turns out the slot is bad and not the RAM), but this is sure > a weird error. Taking a look at "vmstat -i", and trying to avoid interrupt sharing with other devices if possible might help. (If you can, try turning off the USB controller in your BIOS, since that commonly shares an IRQ with other devices.) If you're seeing a RAM slot going bad, it's also quite possible that your motherboard is simply corrupting data and needs to be replaced. Check cooling, check power supply... -- -Chuck