From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: Long-term TCP connections suffer on high-latency links. Date: Thu, 29 Jul 2004 23:25:36 -0700 Sender: netdev-bounce@oss.sgi.com Message-ID: <4109E9E0.9010208@candelatech.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: "'netdev@oss.sgi.com'" Return-path: To: Cheng Jin In-Reply-To: Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Cheng Jin wrote: > As of 2.6.6 kernel, TCP Westwood, which mainly addresses issues in > wireless networks, BIC TCP, and TCP Vegas are all included besides TCP > NewReno, although not enabled by default. The others can be downloaded > from the given websites. There are probably others that I forgot to > mention. Apologies to them in advance. Any chance Westwood will get into the 2.4 kernel as well? > Making the current TCP more ``efficient'' by increasing cwnd faster is not > an adequate solution, although doing that will likely produce higher > throughput in today's Internet. We also must consider issues such as > fairness to other flows, stability of the network in terms of queue > oscillation and packet loss, and how well these solutions would scale in > future networks. A lot of experiments are still needed to determine which > is the most appropriate under what circumstances. Both of the two that I read about (Highspeed TCP and FAST tcp) did indeed increase the cwnd faster, unless I mis-understood the papers. Granted they do it in clever ways... Thanks for the links. Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com