From owner-freebsd-smp@FreeBSD.ORG Tue Apr 22 21:20:53 2008 Return-Path: Delivered-To: freebsd-smp@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F00631065674 for ; Tue, 22 Apr 2008 21:20:53 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.freebsd.org (Postfix) with ESMTP id DDBF08FC20 for ; Tue, 22 Apr 2008 21:20:53 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (unknown [208.65.91.234]) by elvis.mu.org (Postfix) with ESMTP id B41C91A4D83; Tue, 22 Apr 2008 14:04:27 -0700 (PDT) Received: from localhost.corp.yahoo.com (john@localhost [127.0.0.1]) (authenticated bits=0) by server.baldwin.cx (8.14.2/8.14.2) with ESMTP id m3ML4D2w018843; Tue, 22 Apr 2008 17:04:15 -0400 (EDT) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-smp@freebsd.org Date: Tue, 22 Apr 2008 15:13:30 -0400 User-Agent: KMail/1.9.7 References: <47EF6EC1.8040706@kuhl.co.uk> In-Reply-To: <47EF6EC1.8040706@kuhl.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200804221513.30270.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [127.0.0.1]); Tue, 22 Apr 2008 17:04:16 -0400 (EDT) X-Virus-Scanned: ClamAV 0.91.2/6883/Tue Apr 22 14:58:25 2008 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: Rob Subject: Re: SMP interrupt problem X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD SMP implementation group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Apr 2008 21:20:54 -0000 On Sunday 30 March 2008 06:43:13 am Rob wrote: > Hi, got a problem with high interrupt load on a couple of dual CPU servers. First > loaded 6.3 onto each of them and both displayed a constant load showing under > interrupt when looking at top. I then loaded 7.0 onto one of them and found > exactly the same problem. One of them has since had Fedora installed and works > fine with that. Below is the top -CS output and dmesg from the machine with 7.0 > installed, if anyone wishes to see the same info from the 6.3 install I have that > as well if needed. Looks like IRQ 9 is firing a lot (vmstat -i output would be useful). You might try disably certain parts of ACPI (such as thermal, etc.) to see if you can narrow down the source of the interrupts. -- John Baldwin