From owner-freebsd-stable@FreeBSD.ORG  Mon Dec 12 23:36:06 2005
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: freebsd-stable@freebsd.org
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 7B05C16A420
	for <freebsd-stable@freebsd.org>; Mon, 12 Dec 2005 23:36:06 +0000 (GMT)
	(envelope-from atanas@asd.aplus.net)
Received: from pro20.abac.com (pro20.abac.com [66.226.64.21])
	by mx1.FreeBSD.org (Postfix) with ESMTP id E9AE043D81
	for <freebsd-stable@freebsd.org>; Mon, 12 Dec 2005 23:35:58 +0000 (GMT)
	(envelope-from atanas@asd.aplus.net)
Received: from [216.55.129.41] (asd0.aplus.net [216.55.129.41])
	(authenticated bits=0)
	by pro20.abac.com (8.13.4/8.13.4) with ESMTP id jBCNZt4S002174;
	Mon, 12 Dec 2005 15:35:56 -0800 (PST)
	(envelope-from atanas@asd.aplus.net)
Message-ID: <439E0B23.3060304@asd.aplus.net>
Date: Mon, 12 Dec 2005 15:43:31 -0800
From: Atanas <atanas@asd.aplus.net>
User-Agent: Mozilla Thunderbird 1.0.7 (X11/20051026)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Ronald Klop <ronald-freebsd8@klop.yi.org>, freebsd-stable@freebsd.org
References: <439DE88B.1090407@asd.aplus.net> <op.s1owjw158527sy@outgoing.local>
In-Reply-To: <op.s1owjw158527sy@outgoing.local>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Spam-Score: 1.47 (SPF_SOFTFAIL)
Cc: 
Subject: Re: 6.0 random freezes
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 12 Dec 2005 23:36:06 -0000

Ronald Klop said the following on 12/12/05 13:27:
> 
> What happens if you set one of these sysctl values to 0? (This disables  
> SMP changes from 5.4 to 6.0.)
> debug.mpsafevfs: 1
> debug.mpsafenet: 1
> debug.mpsafevm: 1
> 
Thanks for the suggestion!
I just did so and rebooted both machines, so we'll see.

I remember unseting debug.mpsafenet before 5.4 due to some ipfw 
limitations, but didn't know about the other two.

> And is there a possibility (performance-wise) to build a kernel with  
> WITNESS and/or INVARIANTS options compiled in. This will give more info  
> about possible locking problems. Your system will run slower. And 
> because  of this the problem may not occur anymore, but it is worth the 
> try.
> 
Both machines are not much loaded, so I could afford slowing them down a 
bit for a while (I hope it won't be several times slower). I will do 
that at some point later if the problem still persists.

I hope I won't be forced to downgrade to 5.4, though I'm already working 
on that (just in case).

Regards,
Atanas