From owner-freebsd-current Wed Dec 18 20:36:15 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 618FA37B401; Wed, 18 Dec 2002 20:36:14 -0800 (PST) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id D735D43E4A; Wed, 18 Dec 2002 20:36:13 -0800 (PST) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.6/8.12.6) id gBJ4a84u046589; Wed, 18 Dec 2002 22:36:08 -0600 (CST) (envelope-from dan) Date: Wed, 18 Dec 2002 22:36:08 -0600 From: Dan Nelson To: "Greg 'groggy' Lehey" Cc: FreeBSD current users Subject: Re: Frequent lockups with SMP and heavy NFS access Message-ID: <20021219043607.GB54615@dan.emsphone.com> References: <20021219043020.GA53089@wantadilla.lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20021219043020.GA53089@wantadilla.lemis.com> X-OS: FreeBSD 5.0-CURRENT X-message-flag: Outlook Error User-Agent: Mutt/1.5.1i Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In the last episode (Dec 19), Greg 'groggy' Lehey said: > I've been experiencing a lot of lockups (system completely dead, no > reaction at the keyboard, can't ping) on an Intel SMP machine running > CURRENT. Normally I do my kernel builds over NFS, but in the last > few months I haven't been able to complete a 'make world'. Along > with -DNOCLEAN I can get a build done in about 4 attempts; local > builds work fine. NFS builds also work fine with other single > processor machines. > > Questions: > > 1. Has anybody else seen this? > 2. How should I approach looking for the problem? I've seen intermittent lockups where everything is dead, but I can break into DDB via serial console. They may be NFS-related, as it often crashes a half-hour before I get in to work, which could be due to co-workers trying to bulid from my NFS-exported ports tree. ps inside DDB doesn't show anything obviously wrong to my untrained eyes. -- Dan Nelson dnelson@allantgroup.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message