From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: tcp_slow_start_after_idle Date: Wed, 14 Jun 2006 16:06:43 -0700 (PDT) Message-ID: <20060614.160643.93473808.davem@davemloft.net> References: <20060613.223538.24611602.davem@davemloft.net> <44903D82.40007@hp.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, zach.brown@oracle.com, jheffner@psc.edu Return-path: Received: from dsl027-180-168.sfo1.dsl.speakeasy.net ([216.27.180.168]:63414 "EHLO sunset.davemloft.net") by vger.kernel.org with ESMTP id S964999AbWFNXGY (ORCPT ); Wed, 14 Jun 2006 19:06:24 -0400 To: rick.jones2@hp.com In-Reply-To: <44903D82.40007@hp.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Rick Jones Date: Wed, 14 Jun 2006 09:46:58 -0700 > Also, does the congestion window "time out" or does it decay? The modification made to the cwnd is indeed a decay function, but the event is a time out, and it is also termed a restart in other writings and contexts. I think it's all the same. :) > > +/* By default, RFC2861 behavior. */ > > +int sysctl_tcp_slow_start_after_idle = 1; > > + > > Is this a candidate for "readmostly?" All the networking sysctls are, we should do a sweep over them at some point. Thanks for reminding me.