From owner-freebsd-current@FreeBSD.ORG  Sun Sep 12 13:59:18 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
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 E74B816A4CE
	for <current@freebsd.org>; Sun, 12 Sep 2004 13:59:18 +0000 (GMT)
Received: from cpanel.ezone.ru (cpanel.ezone.ru [213.85.31.234])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 90E1743D67
	for <current@freebsd.org>; Sun, 12 Sep 2004 13:59:17 +0000 (GMT)
	(envelope-from mcsi@mcsi.pp.ru)
Received: from [83.237.13.46] (ppp83-237-13-46.pppoe.mtu-net.ru
	[83.237.13.46])	(authenticated bits=0)
	by cpanel.ezone.ru (8.13.1/8.12.11) with ESMTP id i8CDwvHA055686;
	Sun, 12 Sep 2004 17:58:59 +0400 (MSD)	(envelope-from mcsi@mcsi.pp.ru)
Message-ID: <4144561C.4010401@mcsi.pp.ru>
Date: Sun, 12 Sep 2004 17:58:52 +0400
From: Maxim Maximov <mcsi@mcsi.pp.ru>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.2) Gecko/20040907
X-Accept-Language: ru, en-us, en
MIME-Version: 1.0
To: Julian Elischer <julian@elischer.org>
References: <4143EF29.2080404@elischer.org>
In-Reply-To: <4143EF29.2080404@elischer.org>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-Spam-Status: No, hits=-4.9 required=5.0 tests=BAYES_00 autolearn=ham 
	version=2.64
X-Spam-Checker-Version: SpamAssassin 2.64 (2004-01-11) on mail3.ezone.ru
cc: current@freebsd.org
Subject: Re: [Patch] panics/hangs with preemption and threads.
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 12 Sep 2004 13:59:19 -0000

Julian Elischer wrote:
> Guys I think I found a (the?) major cause for the corruptions of the
> ksegrp/thread runqueue for threaded processes when Premption is turned on..

Mozilla didn't lock the system up for an hour of hard work with IMAP! 
That's pretty amazing I'd say. Without this patch it caused hard freeze 
in 1-5 minutes. I'm using sched_4bsd and HTT ATM.

Thanks for finding this bug! Now I'm sure we will have stable 
5.3-RELEASE in time.

-- 
Maxim Maximov