From owner-freebsd-current@FreeBSD.ORG Fri Nov 12 17:58:39 2010 Return-Path: Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D87A8106564A; Fri, 12 Nov 2010 17:58:39 +0000 (UTC) (envelope-from oberman@es.net) Received: from mailgw.es.net (mail1.es.net [IPv6:2001:400:201:1::2]) by mx1.freebsd.org (Postfix) with ESMTP id C1AE48FC0C; Fri, 12 Nov 2010 17:58:39 +0000 (UTC) Received: from ptavv.es.net (ptavv.es.net [IPv6:2001:400:910::29]) by mailgw.es.net (8.14.3/8.14.3) with ESMTP id oACHwdEh027303 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 12 Nov 2010 09:58:39 -0800 Received: from ptavv.es.net (localhost [127.0.0.1]) by ptavv.es.net (Tachyon Server) with ESMTP id EE9D81CC13; Fri, 12 Nov 2010 09:58:38 -0800 (PST) To: Lawrence Stewart In-reply-to: Your message of "Fri, 12 Nov 2010 20:35:45 +1100." <4CDD0A71.7020708@freebsd.org> Date: Fri, 12 Nov 2010 09:58:38 -0800 From: "Kevin Oberman" Message-Id: <20101112175838.EE9D81CC13@ptavv.es.net> Cc: freebsd-current@FreeBSD.org Subject: Re: [HEADS UP] Significant TCP work committed to head X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Nov 2010 17:58:39 -0000 > Date: Fri, 12 Nov 2010 20:35:45 +1100 > From: Lawrence Stewart > Sender: owner-freebsd-current@freebsd.org > > Hi All, > > A quick note that this evening, I made the first in a series of upcoming > commits to head that modify the TCP stack fairly significantly. I have > no reason to believe you'll notice any issues, but TCP is a complex > beast and it's possible things might crop up. The changes are mostly > related to congestion control, so the sorts of issues that are likely to > crop up if any will most probably be subtle and difficult to even > detect. The first svn revision in question is r215166. The next few > commits I plan to make will be basically zero impact and then another > significant patch will follow in a few weeks. > > If you bump into an issue that you think might be related to this work, > please roll back r215166 from your tree and attempt to reporoduce before > reporting the problem. Please CC me directly with your problem report > and post to freebsd-current@ or freebsd-net@ as well. > > Lots more information about what all this does and how to use it will be > following in the coming weeks, but in the meantime, just keep this note > in the back of your mind. For the curious, some information about the > project is available at [1,2]. > > Cheers, > Lawrence > > [1] http://caia.swin.edu.au/freebsd/5cc/ > [2] > http://www.freebsd.org/news/status/report-2010-07-2010-09.html#Five-New-TCP-Congestion-Control-Algorithms-for-FreeBSD Lawrence, Great news! I've been looking forward to having these congestion algorithms for a while and this is clearly a big step to getting there. Do you intend to MFC this for 8.2? -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751