From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756290Ab1ESCkV (ORCPT ); Wed, 18 May 2011 22:40:21 -0400 Received: from shards.monkeyblade.net ([198.137.202.13]:44107 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755914Ab1ESCkS (ORCPT ); Wed, 18 May 2011 22:40:18 -0400 Date: Wed, 18 May 2011 22:36:22 -0400 (EDT) Message-Id: <20110518.223622.1525088601595365235.davem@davemloft.net> To: tsunanet@gmail.com Cc: kuznet@ms2.inr.ac.ru, pekkas@netcore.fi, jmorris@namei.org, yoshfuji@linux-ipv6.org, kaber@trash.net, hagen@jauu.net, eric.dumazet@gmail.com, alexander.zimmermann@comsys.rwth-aachen.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] tcp: Implement a two-level initial RTO as per draft RFC 2988bis-02. From: David Miller In-Reply-To: <1305771744-83951-1-git-send-email-tsunanet@gmail.com> References: <20110518.155200.801089483916944725.davem@davemloft.net> <1305771744-83951-1-git-send-email-tsunanet@gmail.com> X-Mailer: Mew version 6.3 on Emacs 23.2 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (shards.monkeyblade.net [198.137.202.13]); Wed, 18 May 2011 19:36:28 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Benoit Sigoure Date: Wed, 18 May 2011 19:22:24 -0700 > Prior to this patch, Linux would always use 3 seconds (compile-time > constant) as the initial RTO. Draft RFC 2988bis-02 proposes to tune > this down to 1 second and, in case of a timeout during the TCP 3WHS, > revert the RTO back up to 3 seconds when data transmission begins. We just had a discussion where it was determined that changes to these settings are "network specific" and therefore that if it is appropriate at all (I'm still not convinced) it is only suitable as a routing metric.