From owner-freebsd-stable@FreeBSD.ORG Tue Feb 17 19:33:55 2004 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C14E616A4CE for ; Tue, 17 Feb 2004 19:33:55 -0800 (PST) Received: from carver.gumbysoft.com (carver.gumbysoft.com [66.220.23.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id BD95243D2D for ; Tue, 17 Feb 2004 19:33:55 -0800 (PST) (envelope-from dwhite@gumbysoft.com) Received: by carver.gumbysoft.com (Postfix, from userid 1000) id AE8B072DC9; Tue, 17 Feb 2004 19:33:55 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by carver.gumbysoft.com (Postfix) with ESMTP id A946E72DC7; Tue, 17 Feb 2004 19:33:55 -0800 (PST) Date: Tue, 17 Feb 2004 19:33:55 -0800 (PST) From: Doug White To: Peter Jeremy In-Reply-To: <20040211050530.GU20549@gsmx07.alcatel.com.au> Message-ID: <20040217193251.L33568@carver.gumbysoft.com> References: <20040211050530.GU20549@gsmx07.alcatel.com.au> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-stable@freebsd.org Subject: Re: Locating a possible interrupt storm X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 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, 18 Feb 2004 03:33:55 -0000 On Wed, 11 Feb 2004, Peter Jeremy wrote: > My working hypothesis is that an interrupt storm is preventing the > system from doing anything other than acknowledge interrupts. Does > this sound reasonable? If not, can anyone suggest any alternate > hypotheses? Sounds about right. Monitor vmstat -i or 'show intr' from ddb; if any of the numbers seems really high, there's your culprit. -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org