From owner-cvs-all Mon Jan 15 19:42:29 2001 Delivered-To: cvs-all@freebsd.org Received: from meow.osd.bsdi.com (meow.osd.bsdi.com [204.216.28.88]) by hub.freebsd.org (Postfix) with ESMTP id ECB7237B400; Mon, 15 Jan 2001 19:42:03 -0800 (PST) Received: from laptop.baldwin.cx (john@jhb-laptop.osd.bsdi.com [204.216.28.241]) by meow.osd.bsdi.com (8.11.1/8.9.3) with ESMTP id f0G3eY100808; Mon, 15 Jan 2001 19:40:35 -0800 (PST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: Date: Mon, 15 Jan 2001 19:42:11 -0800 (PST) From: John Baldwin To: John Baldwin Subject: RE: cvs commit: src/sys/i386/include atomic.h Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 15-Jan-01 John Baldwin wrote: > > On 14-Jan-01 John Baldwin wrote: >> jhb 2001/01/14 01:55:21 PST >> >> Modified files: >> sys/i386/include atomic.h >> Log: >> Fix the atomic_load_acq() and atomic_store_rel() functions to properly >> implement memory fences for the 486+. The 386 still uses versions w/o >> memory fences as all operations on the 386 are not program ordered. >> The 386 versions are not MP safe. > > This has really helped my SMP stability here locally. The quad xeon has now > built 4 releases back to back w/o any problems. It never made it through 2 > without locking up before. Well, I've tried to stress test all my SMP test machines today. No lockups so far. The quad xeon did have a problem with a -j 1024 world though (make got a bus error). No console messages though so not sure what that was about. My dual p3-600 had been locking up really bad this past week, but it has had 0 problems today with this fix. If other people with SMP can test -current as of this patch and report any lockups, that would be helpful. -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message