From owner-freebsd-questions@FreeBSD.ORG Sat Oct 8 11:41:41 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3A23916A41F for ; Sat, 8 Oct 2005 11:41:41 +0000 (GMT) (envelope-from japz20@yahoo.com) Received: from web50306.mail.yahoo.com (web50306.mail.yahoo.com [206.190.38.60]) by mx1.FreeBSD.org (Postfix) with SMTP id 9CF5A43D46 for ; Sat, 8 Oct 2005 11:41:40 +0000 (GMT) (envelope-from japz20@yahoo.com) Received: (qmail 8788 invoked by uid 60001); 8 Oct 2005 11:41:39 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=F3qJtRC7YJnTaLd0zVsaevhzmWtVY37bRAsbZ2PofOP9W/vuf9GidazO+ZNZnrEmgGyC9OnBbq1+aj4iuxVVik5ci9fBa/b60udExZaO8TNIV53nF741GryKTrlp+z6Anxp1pauZ17UnI5gFid4krFOJvmf/8sqhkdMqJq1VEyM= ; Message-ID: <20051008114139.8786.qmail@web50306.mail.yahoo.com> Received: from [202.138.180.33] by web50306.mail.yahoo.com via HTTP; Sat, 08 Oct 2005 04:41:39 PDT Date: Sat, 8 Oct 2005 04:41:39 -0700 (PDT) From: "Jamie Ann P. Zamodio" To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Subject: Throughput computation given cwnd and transmission time values? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 Oct 2005 11:41:41 -0000 Hey guys. :) Anybody have any idea how to compute for the throughput of a connection given the congestion window size of each segment, but not given the RTT? (I'm using TCP Reno as my protocol flavor.) My log file doesn't provide the individual RTT values, but I have the total transmission time though. When I sum the total congestion window size of the connection and divide it by the transmission time, I get unbelievably high throughput values like 20MB for my 802.11b connection, which I think has a ceiling of 11MB. Any form of reply will be extremely appreciated. Thanks in advance, Jamie __________________________________ Yahoo! Music Unlimited Access over 1 million songs. Try it free. http://music.yahoo.com/unlimited/