From owner-freebsd-ipfw@FreeBSD.ORG Fri Sep 5 09:50:40 2003 Return-Path: Delivered-To: freebsd-ipfw@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2FEC116A4BF for ; Fri, 5 Sep 2003 09:50:40 -0700 (PDT) Received: from gradlab.ucsd.edu (gradlab.ucsd.edu [132.239.55.107]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8B79A43FDF for ; Fri, 5 Sep 2003 09:50:39 -0700 (PDT) (envelope-from ycheng@cs.ucsd.edu) Received: (from ycheng@localhost) by gradlab.ucsd.edu (8.11.6/8.11.6) id h85Godg01405 for ipfw@freebsd.org; Fri, 5 Sep 2003 09:50:39 -0700 (PDT) Date: Fri, 5 Sep 2003 09:50:39 -0700 From: Yuchung Cheng To: ipfw@freebsd.org Message-ID: <20030905095038.D28924@cs.ucsd.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Subject: dummynet and modem pipes X-BeenThere: freebsd-ipfw@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: IPFW Technical Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Sep 2003 16:50:40 -0000 when simulating modem pipes using dummynet, how do we simulate the modem compressions? one way is to pick a compress rate, say 2, and setup fake larger bandwidth, but do different traffic (html, jpg, mpg) affect the compression latency or compression rate significantly? tia -yuchung