From owner-freebsd-alpha Mon Aug 20 1: 2:41 2001 Delivered-To: freebsd-alpha@freebsd.org Received: from peter3.wemm.org (c1315225-a.plstn1.sfba.home.com [24.14.150.180]) by hub.freebsd.org (Postfix) with ESMTP id 0105A37B411; Mon, 20 Aug 2001 01:02:19 -0700 (PDT) (envelope-from peter@wemm.org) Received: from overcee.netplex.com.au (overcee.wemm.org [10.0.0.3]) by peter3.wemm.org (8.11.0/8.11.0) with ESMTP id f7K82IM67646; Mon, 20 Aug 2001 01:02:18 -0700 (PDT) (envelope-from peter@wemm.org) Received: from wemm.org (localhost [127.0.0.1]) by overcee.netplex.com.au (Postfix) with ESMTP id BF1123811; Mon, 20 Aug 2001 01:02:18 -0700 (PDT) (envelope-from peter@wemm.org) X-Mailer: exmh version 2.3.1 01/18/2001 with nmh-1.0.4 To: Andrew Gallatin Cc: John Baldwin , alpha@FreeBSD.ORG, "David O'Brien" , imp@FreeBSD.ORG Subject: Re: today's kernel + JHB's trap.c patch is *evil* In-Reply-To: <15232.26016.723068.885342@grasshopper.cs.duke.edu> Date: Mon, 20 Aug 2001 01:02:18 -0700 From: Peter Wemm Message-Id: <20010820080218.BF1123811@overcee.netplex.com.au> Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Andrew Gallatin wrote: > > John Baldwin writes: > > As to why the 4100 hasn't seen this, it may be that the slower CPU's are > > preventing this race from happening, or that 21164's use a stricter memory > > ordering than 21264's. I've seen similar issues where my dual P3 600 woul d > > have problems when my dual PPro 200 wouldn't. > > > > 21264s are the first alpha to do out of order execution. Perhaps this > has something to do with it. > > FWIW, my UP1000 that I gripe about -current stability problems on is a > 21264 also.. I have a UP2000 in a 'while true make world' loop. It is a 21264 based system SMP, and it has done more than 50 loops in a row now. (Some were cut short due to the libss breakage, but it does a 'make world' in 57 minutes and has been running since friday). I did turn off SMP though since it wedged the ahc scsi controller once. It has been rock solid since then. I'm going to see about making this more available. Cheers, -Peter -- Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message