From owner-freebsd-net@FreeBSD.ORG  Mon Jan 17 16:14:44 2011
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 3C68B1065696
	for <freebsd-net@freebsd.org>; Mon, 17 Jan 2011 16:14:44 +0000 (UTC)
	(envelope-from egrosbein@rdtc.ru)
Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [62.231.161.221])
	by mx1.freebsd.org (Postfix) with ESMTP id 9BB678FC18
	for <freebsd-net@freebsd.org>; Mon, 17 Jan 2011 16:14:43 +0000 (UTC)
Received: from eg.sd.rdtc.ru (localhost [127.0.0.1])
	by eg.sd.rdtc.ru (8.14.4/8.14.4) with ESMTP id p0HGEepv033352;
	Mon, 17 Jan 2011 22:14:40 +0600 (NOVT)
	(envelope-from egrosbein@rdtc.ru)
Message-ID: <4D346AEB.8000807@rdtc.ru>
Date: Mon, 17 Jan 2011 22:14:35 +0600
From: Eugene Grosbein <egrosbein@rdtc.ru>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; ru-RU;
	rv:1.9.2.13) Gecko/20110112 Thunderbird/3.1.7
MIME-Version: 1.0
To: Mike Tancsa <mike@sentex.net>
References: <4D3011DB.9050900@frasunek.com> <4D30458D.30007@sentex.net>
	<4D341E80.7000303@rdtc.ru> <4D342AEC.4030600@sentex.net>
In-Reply-To: <4D342AEC.4030600@sentex.net>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: freebsd-net@freebsd.org
Subject: Re: Netgraph/mpd5 stability issues
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 17 Jan 2011 16:14:44 -0000

On 17.01.2011 17:41, Mike Tancsa wrote:

>>> I also have stability issues on RELENG_8.
>>>
>>> http://www.freebsd.org/cgi/query-pr.cgi?pr=153497
>>
>> Do you change net.isr.direct from default 1 to 0 for your box?
> 
> No, I leave it at 1
> 
> 	---Mike

I was experiencing some instability with mpd/netgraph too
but found workaround: increase netgraph buffers/queues.

For 4GB RAM, /boot/loader.conf:

# netgraph queue sizes tuning, see vmstat -z|egrep 'ITEM|NetGraph'
net.graph.maxdata=65536
net.graph.maxalloc=65536

For /etc/sysctl.conf:

kern.ipc.maxsockbuf=83886080
net.graph.maxdgram=8388608
net.graph.recvspace=8388608

It helps not to overflow netgraph event queues in my case
and takes away netgraph-related stability problems.

Eugene Grosbein