From owner-freebsd-stable Sun Oct 6 6:26:28 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4882937B401 for ; Sun, 6 Oct 2002 06:26:27 -0700 (PDT) Received: from mailgate.rz.uni-karlsruhe.de (mailgate.rz.uni-karlsruhe.de [129.13.64.97]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7320343EB1 for ; Sun, 6 Oct 2002 06:26:26 -0700 (PDT) (envelope-from cmt@rz.uni-karlsruhe.de) Received: from rz-ewok.rz.uni-karlsruhe.de (postfix@rz-ewok.rz.uni-karlsruhe.de [129.13.80.10]) by mailgate.rz.uni-karlsruhe.de with esmtp (Exim 3.36 #1) id 17yBQP-0003U8-00; Sun, 06 Oct 2002 15:26:25 +0200 Received: by rz-ewok.rz.uni-karlsruhe.de (Postfix, from userid 1005) id 23338793; Sun, 6 Oct 2002 15:26:25 +0200 (CEST) Date: Sun, 6 Oct 2002 15:26:25 +0200 From: Christoph Moench-Tegeder To: freebsd-stable@FreeBSD.ORG Subject: Re: Traffic shaping Message-ID: <20021006132624.GA27191@rz-ewok.rz.uni-karlsruhe.de> References: <200210050655.g956t3Mp091313@lurza.secnetix.de> <006501c26d35$f6904720$1001a8c0@jennie> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <006501c26d35$f6904720$1001a8c0@jennie> User-Agent: Mutt/1.4i X-PGP-Key: RSA/2048 0xB816EBBD X-PGP-Fingerprint: 89 2E 6D 05 95 B8 D7 1F 7C 1D C3 1E 95 A0 9B 5D X-GPG: supported Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG ## Maarten de Vries (mdv@unsavoury.net): > I could do with some hints regarding traffic shaping. My homenetwork is > hooked up to an assymetrical (1536/256) ADSL line, using a FreeBSD 4.6 > system which provides the usual NAT/Gateway/Firewall services. I'm using > dummynet to control the amount of bandwidth used by certain hosts on the > network, which all works fine. However, I still suffer from latency when the > maximum up- and/or downstream of the line is being utilized. If I understand > it well, this happens because the buffer in the ADSL modem fills up > completely at those occasions. Is there anyway to prevent this from > happening? Limit the maximum usage of your line to about 90% to 95%. This prevents usage of the queue in your modem. However, this will not work if queueing on the remote side is the problem (bulk transfers like downloads come to mind); you are out of luck if the queue on the remote side is too long. Regards, cmt -- Spare Space To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message