From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Heffner Subject: Re: [PATCH] TSO Reloaded Date: Tue, 17 May 2005 22:26:09 -0400 Message-ID: <46332e5aa197db91aaf012cf140282b4@psc.edu> References: <20050504230731.12be1bc3.davem@davemloft.net> Mime-Version: 1.0 (Apple Message framework v622) Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@oss.sgi.com Return-path: In-Reply-To: <20050504230731.12be1bc3.davem@davemloft.net> To: "David S. Miller" Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Though it may be moot by now, I just ran some tests of my own with this patch. This was on a dual 2.4 GHz Xeon booted with a UP kernel, running iperf over an e1000 at a 1500 byte MTU. I measured idle CPU by running a process which sits in a gettimeofday() loop. Numbers are CPU utilization, all turned out +/- 1%. No TSO: 86.6% Old TSO: 61.0% New TSO: 88.5% -John