From owner-freebsd-stable@FreeBSD.ORG  Tue Dec 12 12:22:27 2006
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: stable@freebsd.org
Delivered-To: freebsd-stable@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 90EFA16A501
	for <stable@freebsd.org>; Tue, 12 Dec 2006 12:22:27 +0000 (UTC)
	(envelope-from dkirhlarov@oilspace.com)
Received: from office.oilspace.com (ns2.oilspace.com [194.129.65.230])
	by mx1.FreeBSD.org (Postfix) with ESMTP id AAB9543CA7
	for <stable@freebsd.org>; Tue, 12 Dec 2006 12:21:02 +0000 (GMT)
	(envelope-from dkirhlarov@oilspace.com)
Received: from dkirhlarov.mow.oilspace.com (mos.oilspace.com [81.222.156.189])
	by office.oilspace.com (Postfix) with ESMTP id E854C136D0B
	for <stable@freebsd.org>; Tue, 12 Dec 2006 12:22:22 +0000 (GMT)
Received: from dkirhlarov.mow.oilspace.com (localhost [127.0.0.1])
	by dkirhlarov.mow.oilspace.com (8.13.8/8.13.8) with ESMTP id
	kBCCMMhv076040
	for <stable@freebsd.org>; Tue, 12 Dec 2006 15:22:22 +0300 (MSK)
	(envelope-from dkirhlarov@dkirhlarov.mow.oilspace.com)
Received: (from dkirhlarov@localhost)
	by dkirhlarov.mow.oilspace.com (8.13.8/8.13.8/Submit) id kBCCMMJb076039
	for stable@freebsd.org; Tue, 12 Dec 2006 15:22:22 +0300 (MSK)
	(envelope-from dkirhlarov)
Date: Tue, 12 Dec 2006 15:22:22 +0300
From: Dmitriy Kirhlarov <dimma@higis.ru>
To: stable@freebsd.org
Message-ID: <20061212122221.GE39171@dkirhlarov.mow.oilspace.com>
Mail-Followup-To: stable@freebsd.org
References: <20061113084430.GE59604@dimma.mow.oilspace.com>
	<20061116102436.GN32700@FreeBSD.org>
	<20061116111525.GO32700@FreeBSD.org>
	<200612071118.52922.davidxu@freebsd.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200612071118.52922.davidxu@freebsd.org>
X-Mailer: Mutt-ng devel (2005-03-13) based on Mutt 1.5.9
X-Operating-System: FreeBSD 6.2-PRERELEASE
User-Agent: mutt-ng/devel-r804 (FreeBSD)
Cc: 
Subject: Re: RELENG_6 panic under heavy load
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: Tue, 12 Dec 2006 12:22:27 -0000

On Thu, Dec 07, 2006 at 11:18:52AM +0800, David Xu wrote:
> On Thursday 16 November 2006 19:15, Gleb Smirnoff wrote:
> > On Thu, Nov 16, 2006 at 01:24:36PM +0300, Gleb Smirnoff wrote:
> > T>   I wonder why UMA was suspected to be the problem. Dima gave
> > T> me access to the core. Here are more details from the trace:
> >
> > It looks like a race between two threads in one process. Look here:
> >
> Can you try the patch ?
> http://people.freebsd.org/~davidxu/patch/ksegrp_preempt.patch 

I've tested it. This patch works also, but with a little bit different
behaviour. With patch from jhb@ I got LA 7-8, with this patch I have
LA 5-6, same as on unpatched system. But it seems to me, that system
is less interactive, compared to jhb@ patch.

WBR
Dmitriy