From owner-svn-src-all@FreeBSD.ORG Sun Mar 15 20:54:00 2009 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 21B561065674; Sun, 15 Mar 2009 20:54:00 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id F05538FC1F; Sun, 15 Mar 2009 20:53:59 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [65.122.17.41]) by cyrus.watson.org (Postfix) with ESMTPS id 7F8FC46B55; Sun, 15 Mar 2009 16:53:59 -0400 (EDT) Date: Sun, 15 Mar 2009 20:53:59 +0000 (GMT) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Kris Kennaway In-Reply-To: <49BD63AB.6090702@FreeBSD.org> Message-ID: References: <200903152017.n2FKHijd038587@svn.freebsd.org> <49BD63AB.6090702@FreeBSD.org> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r189863 - in head: share/man/man4 sys/net X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Mar 2009 20:54:01 -0000 On Sun, 15 Mar 2009, Kris Kennaway wrote: >> Kris reports that this leads to significant performance improvements >> in loopback benchmarking with TCP and UDP for throughput: >> RXCSUM RXCSUM+TXCSUM >> TCP 15% 37% >> UDP 10% 74% > > More like 24% instead of 74% actually, the sender and receiver had become > unbalanced in that test. That makes more sense -- I was surprised to see such a large win on UDP. Thanks for the update. Robert N M Watson Computer Laboratory University of Cambridge