From owner-freebsd-questions@FreeBSD.ORG Sat Jan 29 20:31:11 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 345CE16A4CF for ; Sat, 29 Jan 2005 20:31:11 +0000 (GMT) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id E5BC643D48 for ; Sat, 29 Jan 2005 20:31:10 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id 189F55F1A; Sat, 29 Jan 2005 15:31:10 -0500 (EST) Received: from pi.codefab.com ([127.0.0.1]) by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 50653-04; Sat, 29 Jan 2005 15:31:07 -0500 (EST) Received: from [192.168.1.3] (pool-68-161-114-38.ny325.east.verizon.net [68.161.114.38]) by pi.codefab.com (Postfix) with ESMTP id 9CBE65F02; Sat, 29 Jan 2005 15:31:06 -0500 (EST) Message-ID: <41FBF288.6010000@mac.com> Date: Sat, 29 Jan 2005 15:31:04 -0500 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041217 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Lucky Green References: <20050129104212.7CAB217030@mail.cypherpunks.to> In-Reply-To: <20050129104212.7CAB217030@mail.cypherpunks.to> X-Enigmail-Version: 0.90.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at codefab.com cc: freebsd-questions@freebsd.org Subject: Re: Seeking performance tuning pointers/tracking down GIANT X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 Jan 2005 20:31:11 -0000 Lucky Green wrote: > System: > Dual processor Intel PentiumPro motherboard. FreeBSD 5.3 SMP kernel. fxp > 100baseT NIC. > > I am managing a system that is running tor, a fairly network intensive > service. See http://tor.eff.org > The service processes about 7Mbps symmetric traffic sustained. "top" shows > about 33% CPU idle. There is plenty of inactive/free RAM. While server > throughput grew steadily over time, throughput appears to have hit a ceiling > at between 7 and 8 Mbps. You can't do more than around 8-10 megabytes per second of actual data via a 100 Mbs link due to network protocol overhead, packet collisions, and such. If you want this thing to go significantly faster, consider gigabit ethernet. [ If you're only getting 8 megabits per second, then that's another case... ] -- -Chuck