From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 28 Jan 2001 19:16:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 28 Jan 2001 19:15:58 -0500 Received: from pcep-jamie.cern.ch ([137.138.38.126]:8198 "EHLO pcep-jamie.cern.ch") by vger.kernel.org with ESMTP id ; Sun, 28 Jan 2001 19:15:46 -0500 Date: Mon, 29 Jan 2001 01:14:59 +0100 From: Jamie Lokier To: Gregory Maxwell Cc: James Sutherland , jamal , linux-kernel@vger.kernel.org Subject: Re: ECN: Clearing the air (fwd) Message-ID: <20010129011459.B9408@pcep-jamie.cern.ch> In-Reply-To: <20010128144204.B13195@xi.linuxpower.cx> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010128144204.B13195@xi.linuxpower.cx>; from greg@linuxpower.cx on Sun, Jan 28, 2001 at 02:42:04PM -0500 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Gregory Maxwell wrote: > > > There is nothing silly with the decision, davem is simply a modern day > > > internet hero. > > > > No. If it were something essential, perhaps, but it's just a minor > > performance tweak to cut packet loss over congested links. It's not > > IPv6. It's not PMTU. It's not even very useful right now! > > No. ECN is essential to the continued stability of the Internet. Without > probabilistic queuing (i.e. RED) and ECN the Internet will continue to have > retransmit synchronization and once congested stay congested until people get > frustrated and give it up for a little bit. There are other forms of probabilistic queuing, and RED+ECN may not be one of the ones which scales as the net gets larger.... We're keen on latency, burst avoidance and other quality guarantees these days. ECN is an improvement of just RED alone of course. -- Jamie - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/