From owner-freebsd-current@FreeBSD.ORG Mon Aug 23 11:46:43 2004 Return-Path: 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 9E73116A4CE for ; Mon, 23 Aug 2004 11:46:43 +0000 (GMT) Received: from imap.univie.ac.at (mail.univie.ac.at [131.130.1.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id DF68143D45 for ; Mon, 23 Aug 2004 11:46:42 +0000 (GMT) (envelope-from le@FreeBSD.org) Received: from pcle2.cc.univie.ac.at (pcle2.cc.univie.ac.at [131.130.2.177]) by imap.univie.ac.at (8.12.10/8.12.10) with ESMTP id i7NBkT7u088626; Mon, 23 Aug 2004 13:46:32 +0200 Date: Mon, 23 Aug 2004 13:46:29 +0200 (CEST) From: Lukas Ertl To: Doug White In-Reply-To: <20040822115345.Y94593@carver.gumbysoft.com> Message-ID: <20040823134538.D3016@pcle2.cc.univie.ac.at> References: <20040822115345.Y94593@carver.gumbysoft.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-DCC-ZID-Univie-Metrics: mx7.univie.ac.at 4247; Body=2 Fuz1=2 Fuz2=2 cc: freebsd-current@FreeBSD.org Subject: Re: PLEASE TEST: IPI deadlock avoidance patch X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Aug 2004 11:46:43 -0000 On Sun, 22 Aug 2004, Doug White wrote: > If you have a reasonably fast i386 or amd64 multiprocessor and/or > hyperthreading machine and are experiencing reproducible hangs during -j > buildwords and other highly parallel operations, please try this patch: > > http://people.freebsd.org/~dwhite/smp_rv_mtx.patch Looks good here - several of my Xeon boxes that were subject to deadlocks have survived -j4 buildworlds and other load situations with this patch. Thanks! cheers, le -- Lukas Ertl http://homepage.univie.ac.at/l.ertl/ le@FreeBSD.org http://people.freebsd.org/~le/