From owner-freebsd-ipfw@FreeBSD.ORG Tue Jul 28 06:36:35 2009 Return-Path: Delivered-To: freebsd-ipfw@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CA555106566C for ; Tue, 28 Jul 2009 06:36:35 +0000 (UTC) (envelope-from julian@elischer.org) Received: from outL.internet-mail-service.net (outl.internet-mail-service.net [216.240.47.235]) by mx1.freebsd.org (Postfix) with ESMTP id B20588FC08 for ; Tue, 28 Jul 2009 06:36:35 +0000 (UTC) (envelope-from julian@elischer.org) Received: from idiom.com (mx0.idiom.com [216.240.32.160]) by out.internet-mail-service.net (Postfix) with ESMTP id 2926522FA; Mon, 27 Jul 2009 23:22:03 -0700 (PDT) X-Client-Authorized: MaGic Cook1e X-Client-Authorized: MaGic Cook1e Received: from julian-mac.elischer.org (home.elischer.org [216.240.48.38]) by idiom.com (Postfix) with ESMTP id DCC352D600D; Mon, 27 Jul 2009 23:22:02 -0700 (PDT) Message-ID: <4A6E990E.6090800@elischer.org> Date: Mon, 27 Jul 2009 23:22:06 -0700 From: Julian Elischer User-Agent: Thunderbird 2.0.0.22 (Macintosh/20090605) MIME-Version: 1.0 To: Mark Sandford References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-ipfw@freebsd.org Subject: Re: Using dummynet to restrict bandwidth with more than 2 active pipes / queues X-BeenThere: freebsd-ipfw@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: IPFW Technical Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jul 2009 06:36:36 -0000 Mark Sandford wrote: > Sorry if anyone's wasted time looking at this. The problem appears > to be with the traffic generator. Once we get above two generation > processes we think that the data is being sent in bursts so although > it appears to be right averaged over a second at a finer granularity > the burstiness is meaning it's either exceeding the bandwidth or idle > at each point. > what are you using to generate traffic? and what kind of traffic?