From owner-freebsd-hackers@FreeBSD.ORG  Wed Jul  9 11:19:00 2003
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id A667C37B411
	for <freebsd-hackers@freebsd.org>;
	Wed,  9 Jul 2003 11:19:00 -0700 (PDT)
Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101])
	by mx1.FreeBSD.org (Postfix) with ESMTP id EE15943F3F
	for <freebsd-hackers@freebsd.org>;
	Wed,  9 Jul 2003 11:18:59 -0700 (PDT)
	(envelope-from dan@dan.emsphone.com)
Received: (from dan@localhost)
	by dan.emsphone.com (8.12.9/8.12.9) id h69IIx5Z031741;
	Wed, 9 Jul 2003 13:18:59 -0500 (CDT)
	(envelope-from dan)
Date: Wed, 9 Jul 2003 13:18:59 -0500
From: Dan Nelson <dnelson@allantgroup.com>
To: Max Clark <max.clark@media.net>
Message-ID: <20030709181859.GH39506@dan.emsphone.com>
References: <ILENIMHFIPIBHJLCDEHKKEEFCJAA.max.clark@media.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <ILENIMHFIPIBHJLCDEHKKEEFCJAA.max.clark@media.net>
X-OS: FreeBSD 5.1-CURRENT
X-message-flag: Outlook Error
User-Agent: Mutt/1.5.4i
cc: freebsd-hackers@freebsd.org
Subject: Re: What ever happened with this? "eXperimental bandwidth delay
	product code"
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 09 Jul 2003 18:19:01 -0000

In the last episode (Jul 09), Max Clark said:
> Hi all,
> 
> I am doing research on dynamic tcp tunning, what ever happened with the
> patch below?
> 
> http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&safe=off&selm=200107150943.f6F9hhx06763%40earth.backplane.com&rnum=1

It got commited to 4.x and 5.x in August 2002; the sysctls were renamed
to net.inet.tcp.inflight_debug, inflight_enable, and inflight_min. 
They're documented in the tcp(4) manpage.  Note that it's got a
specific purpose; you don't want to turn this on by default as it will
lower the throughput of individual TCP streams to prevent backlogs and
packet loss.

-- 
	Dan Nelson
	dnelson@allantgroup.com