From owner-freebsd-net@FreeBSD.ORG Mon Nov 14 00:22:49 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 028361065675 for ; Mon, 14 Nov 2011 00:22:49 +0000 (UTC) (envelope-from weiler@soe.ucsc.edu) Received: from mail-01.cse.ucsc.edu (mail-01.cse.ucsc.edu [128.114.48.32]) by mx1.freebsd.org (Postfix) with ESMTP id E22CA8FC14 for ; Mon, 14 Nov 2011 00:22:48 +0000 (UTC) Received: from erich-weilers-macbook-pro.local (50-0-69-3.dsl.static.fusionbroadband.com [50.0.69.3]) by mail-01.cse.ucsc.edu (Postfix) with ESMTPSA id B3D1A1009CAB; Sun, 13 Nov 2011 16:22:48 -0800 (PST) Message-ID: <4EC05F58.1050103@soe.ucsc.edu> Date: Sun, 13 Nov 2011 16:22:48 -0800 From: Erich Weiler User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: Jason Wolfe References: <4EC033B7.5080609@soe.ucsc.edu> <4EC0395C.3030302@swin.edu.au> <4EC055CB.40100@soe.ucsc.edu> <4EC0585F.5000104@soe.ucsc.edu> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org, grenville armitage Subject: Re: Arg. TCP slow start killing me. X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Nov 2011 00:22:49 -0000 > Yeah, skimming fail, I didn't realize the machine was not the > termination point of your connections. I do have patches back ported > that would likely get the modular congestion control working on 8.1, > but neither my suggestions nor the implementation of Cubic will help > much as mentioned. Given that my firewall is simply forwarding packets in and out, and is not an endpoint, does anyone think tuning up buffers would help here? If so, which buffers/sysctl parameters would be worth trying? Thanks for the help everyone!