From owner-freebsd-stable@FreeBSD.ORG  Tue May 31 02:52:37 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 AEC6716A41C
	for <freebsd-stable@freebsd.org>; Tue, 31 May 2005 02:52:37 +0000 (GMT)
	(envelope-from devin@spamcop.net)
Received: from mail.distalzou.net (203.141.139.231.user.ad.il24.net
	[203.141.139.231])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 5D4D243D1F
	for <freebsd-stable@freebsd.org>; Tue, 31 May 2005 02:52:37 +0000 (GMT)
	(envelope-from devin@spamcop.net)
Received: from plexi.pun-pun.prv ([192.168.7.29] helo=plexi)
	by mail.distalzou.net with esmtps (TLSv1:AES256-SHA:256)
	(Exim 4.51 (FreeBSD))
	id 1DcwrS-0000OO-RG; Tue, 31 May 2005 11:52:10 +0900
Date: Tue, 31 May 2005 11:52:10 +0900 (JST)
From: Tod McQuillin <devin@spamcop.net>
X-X-Sender: devin@plexi.pun-pun.prv
To: Kris Kennaway <kris@obsecurity.org>
In-Reply-To: <20050530225340.GA34233@xor.obsecurity.org>
Message-ID: <20050531115114.I727@plexi.pun-pun.prv>
References: <20050529221024.4fu2p4yjusk04k0g@mail.banot.net>
	<20050529212705.GA64753@xor.obsecurity.org>
	<1117447400.5384.4.camel@localhost.localdomain>
	<20050530104928.GB79877@sr.se>
	<1117465224.9934.7.camel@localhost.localdomain>
	<429B44BD.7070806@pp.nic.fi>
	<20050530191843.GA82875@xor.obsecurity.org>
	<429B7DF6.8040704@it-is-warlock.de>
	<20050530225340.GA34233@xor.obsecurity.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: Imobach ??? Sosa <imobachgs@banot.net>, freebsd-stable@freebsd.org,
	Sebastian Ahndorf <webmaster@it-is-warlock.de>
Subject: Re: Poor network performance: a lot of timeouts
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, 31 May 2005 02:52:37 -0000

On Mon, 30 May 2005, Kris Kennaway wrote:

> On Mon, May 30, 2005 at 10:56:22PM +0200, Sebastian Ahndorf wrote:
>> Kris Kennaway wrote:
>>>> Both sides must have same config, autosense should work if there is no
>>>> config possibility in other end.
>>>
>>>
>>> autosense may in fact not work, especially on low-quality NICs like rl.
>>>
>>
>> I don't agree to that.
>> I had similar problems with my network using a cheap switch with some
>> realtek nics. I had the nics running 100baseTX Full Duplex.
>> Changing this to autosense made the problems gone.
>
> Your one example does not disprove the statement.  I've seen this
> problem myself, and so have many others.

I found this document extremely helpful in understanding ethernet 
autonegotiation, especially the table on page 7:

https://myvision.flukenetworks.com/edocs/efile.asp?oid=2040882

Good luck,
-- 
Tod