Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755169Ab1CAHY0 (ORCPT ); Tue, 1 Mar 2011 02:24:26 -0500 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:38441 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751100Ab1CAHYZ (ORCPT ); Tue, 1 Mar 2011 02:24:25 -0500 Date: Mon, 28 Feb 2011 23:25:02 -0800 (PST) Message-Id: <20110228.232502.226763923.davem@davemloft.net> To: acahalan@gmail.com Cc: johnwheffner@gmail.com, linville@tuxdriver.com, eric.dumazet@gmail.com, jussi.kivilinna@mbnet.fi, swmike@swm.pp.se, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: txqueuelen has wrong units; should be time From: David Miller In-Reply-To: References: <20110228.201852.193726064.davem@davemloft.net> X-Mailer: Mew version 6.3 on Emacs 23.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 755 Lines: 17 From: Albert Cahalan Date: Tue, 1 Mar 2011 01:54:09 -0500 > In case it makes you feel any better, consider two cases > where synchronous feedback is already impossible. > One is when you're routing packets that merely pass through. > The other is when some other box is doing that to you. > Either way, packets go bye-bye and nobody tells TCP. I consider ECN quite synchronous, and routers will set ECN bits to propagate congestion information when they do or are about to drop packets. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/