From owner-freebsd-stable@FreeBSD.ORG  Sat Nov 26 16:17:05 2011
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 9CBAD1065670;
	Sat, 26 Nov 2011 16:17:05 +0000 (UTC)
	(envelope-from george+freebsd@m5p.com)
Received: from mailhost.m5p.com (ip-3-2-0-2.r20.asbnva02.us.ce.gin.ntt.net
	[IPv6:2001:418:0:5000::16])
	by mx1.freebsd.org (Postfix) with ESMTP id 514A88FC12;
	Sat, 26 Nov 2011 16:17:05 +0000 (UTC)
Received: from wonderland.m5p.com (wonderland.m5p.com [IPv6:2001:418:3fd::19])
	by mailhost.m5p.com (8.14.4/8.14.4) with ESMTP id pAQGGwMJ090984;
	Sat, 26 Nov 2011 11:17:03 -0500 (EST)
	(envelope-from george+freebsd@m5p.com)
Message-ID: <4ED110FA.4060406@m5p.com>
Date: Sat, 26 Nov 2011 11:16:58 -0500
From: George Mitchell <george+freebsd@m5p.com>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
	rv:7.0.1) Gecko/20111023 Thunderbird/7.0.1
MIME-Version: 1.0
To: Lawrence Stewart <lstewart@freebsd.org>, freebsd-stable@freebsd.org
References: <CAPNZ-Wq38=F3o2hYuYF_unBj3SZQ52XhVhdcwQ8PE_vU9xc2YA@mail.gmail.com>
	<4ECEF6FD.5050006@freebsd.org> <4ED077BF.10205@freebsd.org>
In-Reply-To: <4ED077BF.10205@freebsd.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.7
	(mailhost.m5p.com [IPv6:2001:418:3fd::f7]);
	Sat, 26 Nov 2011 11:17:04 -0500 (EST)
X-Scanned-By: MIMEDefang 2.72 on IPv6:2001:418:3fd::f7
Cc: 
Subject: Re: TCP Reassembly Issues
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: Sat, 26 Nov 2011 16:17:05 -0000

On 11/26/11 00:23, Lawrence Stewart wrote:
> [...]
> Could those who have reported the bug and are able to recompile their
> kernel to test a patch please try the following and report back to the
> list:
>
> http://people.freebsd.org/~lstewart/patches/misctcp/tcp_reass_plugzoneleak_10.x.r227986.patch
> [...]
Works for me!  I'm now getting a sustained throughput of 7.4MB/s,
compared to 4.3MB/s on 8.2-STABLE and 3.2MB/s on 7.4-RELEASE, all on
the same hardware (HP notebook with re 100Mb/s interface, reading from
an 8.2-STABLE server with an alc 1000Mb/s interface, via two gigabit
switches).

But I'm still bemused that there should have been any TCP reassembly
going on.  Doesn't that imply that there was packet fragmentation?  My
network is uniformly 1500 byte MTU.                         -- George