From owner-freebsd-hackers@FreeBSD.ORG Thu Apr 8 01:24:18 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4CBA416A4CF for ; Thu, 8 Apr 2004 01:24:18 -0700 (PDT) Received: from cliffclavin.cs.rpi.edu (cliffclavin.cs.rpi.edu [128.213.1.9]) by mx1.FreeBSD.org (Postfix) with ESMTP id E154043D4C for ; Thu, 8 Apr 2004 01:24:17 -0700 (PDT) (envelope-from crossd@cs.rpi.edu) Received: from monica.cs.rpi.edu (root@monica.cs.rpi.edu [128.213.7.2]) i388OHlE010071 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 8 Apr 2004 04:24:17 -0400 (EDT) Received: from monica.cs.rpi.edu (crossd@localhost [127.0.0.1]) by monica.cs.rpi.edu (8.12.9p2/8.12.6) with ESMTP id i388OG5j039268 for ; Thu, 8 Apr 2004 04:24:16 -0400 (EDT) (envelope-from crossd@monica.cs.rpi.edu) Received: from localhost (crossd@localhost)i388OGQM039265 for ; Thu, 8 Apr 2004 04:24:16 -0400 (EDT) (envelope-from crossd@monica.cs.rpi.edu) Date: Thu, 8 Apr 2004 04:24:16 -0400 (EDT) From: "David E. Cross" To: freebsd-hackers@freebsd.org Message-ID: <20040408041649.G38114@monica.cs.rpi.edu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Scanned-By: MIMEDefang 2.37 Subject: 5.2.1-RELEASE, SMP, ACPI, Interrupt loop? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Apr 2004 08:24:18 -0000 I recently upgraded my old P2B-DS dual processor (p2-450Mhz) machine to 5.2.1 everything seemed to be going well, and in fact I didn't notice it until recently, but even when the machine is idle it is spending 50% of its time in an interrupt loop (since I have 2 processors, the second one is free for me to use, since I had only been doing serial tasks I hadn't had cause to notice). If I turn off ACPI I keep both processors and everything else, additionally the interrupt problems go away. One further note is on shutdown, right after ACPI is disabled I get a mangled line of text, one time in particular it said "stray irq 2"; no idea if it was really irq 2, it could have been "12", it seems random characters are dropped under the IRQ storm. Has anyone seen this? Better yet, anyone know what I can do about it? I'd like to keep ACPI support if possible (for things like actually shutting the computer off in response to ACLine/UPS failure.) Cheers, -- David E. Cross