From owner-freebsd-hackers@FreeBSD.ORG Wed Jul 9 12:40:31 2003 Return-Path: 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 82E8E37B401 for ; Wed, 9 Jul 2003 12:40:31 -0700 (PDT) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id C052643F75 for ; Wed, 9 Jul 2003 12:40:30 -0700 (PDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.9/8.12.9) id h69JeUvJ050006; Wed, 9 Jul 2003 14:40:30 -0500 (CDT) (envelope-from dan) Date: Wed, 9 Jul 2003 14:40:30 -0500 From: Dan Nelson To: Max Clark Message-ID: <20030709194029.GM39506@dan.emsphone.com> References: <20030709190214.GL39506@dan.emsphone.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2003 19:40:31 -0000 In the last episode (Jul 09), Max Clark said: > > 6000000/8*.220 = 165Kbytes or 1.32Mbit/s > > I understand the BDP concept and the calculation to then generate the > tcp window sizes. What I don't understand is this... > > How in the world is a windows 2000 box running commercial software > able to push this link to 625KByte/s (5Mbit/s)???? Perhaps it defaults to a larger window size? You can easily verify this with tcpdump or ethereal. -- Dan Nelson dnelson@allantgroup.com