From owner-freebsd-net@FreeBSD.ORG Tue Mar 16 11:41:16 2004 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CCD3216A4CF for ; Tue, 16 Mar 2004 11:41:16 -0800 (PST) Received: from mx04.ca.mci.com (mx04.ca.mci.com [142.77.2.24]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8B62C43D53 for ; Tue, 16 Mar 2004 11:41:16 -0800 (PST) (envelope-from kfl@xiphos.ca) Received: from xiphos.ca (unknown [216.95.199.148]) by mx04.ca.mci.com (Postfix) with ESMTP id 7CD346CCA5; Tue, 16 Mar 2004 14:41:15 -0500 (EST) Message-ID: <40575A8F.8090402@xiphos.ca> Date: Tue, 16 Mar 2004 14:50:39 -0500 From: Karim Fodil-Lemelin User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040113 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit cc: luigi@iet.unipi.it Subject: Dummynet Limitations X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Mar 2004 19:41:16 -0000 Hi This code: if (pipe.delay > 10000) errx(EX_DATAERR, "delay %d must be < 10000", pipe.delay); in /usr/src/sbin/ipfw/ipfw.c Limits the pipe delay for dummynet to 10 seconds. Is there any reason for this? Also, no such limit is imposed on the bandwidth why? Memory (amount of mbufs/mbclusters) is obviously a limit here but I was wondering if something else was hidden in this statement. Regards, Karim