From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-11-iad.dyndns.com (mxout-026-iad.mailhop.org [216.146.32.26]) by lists.bufferbloat.net (Postfix) with ESMTP id 66A302E03FA for ; Sun, 20 Mar 2011 13:34:01 -0700 (PDT) Received: from scan-11-iad.mailhop.org (scan-11-iad.local [10.150.0.208]) by mail-11-iad.dyndns.com (Postfix) with ESMTP id 9AFEF1713CC for ; Sun, 20 Mar 2011 20:34:00 +0000 (UTC) X-Spam-Score: 0.0 () X-Mail-Handler: MailHop by DynDNS X-Originating-IP: 136.186.1.30 Received: from gpo1.cc.swin.edu.au (gpo1.cc.swin.edu.au [136.186.1.30]) by mail-11-iad.dyndns.com (Postfix) with ESMTP id 79934170EAD; Sun, 20 Mar 2011 20:33:59 +0000 (UTC) Received: from [136.186.229.43] (garmitage2.caia.swin.edu.au [136.186.229.43]) by gpo1.cc.swin.edu.au (8.14.3/8.14.3) with ESMTP id p2KKXsch008224 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NO); Mon, 21 Mar 2011 07:33:57 +1100 Message-ID: <4D8664A9.5060805@swin.edu.au> Date: Mon, 21 Mar 2011 07:33:45 +1100 From: grenville armitage User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.12) Gecko/20101029 Thunderbird/3.1.6 MIME-Version: 1.0 To: bloat References: <0D59AD34-AA64-4376-BB8E-58C5D378F488@gmail.com> <4D829B58.1070601@swin.edu.au> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: bloat-devel Subject: Re: [Bloat] Progress with latency-under-load tool X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 20 Mar 2011 20:34:01 -0000 On 03/20/2011 21:45, Jonathan Morton wrote: [..] > Here are some numbers I got from a test over a switched 100base-TX LAN: > > Upload Capacity: 1018 KiB/s > Download Capacity: 2181 KiB/s > Link Responsiveness: 2 Hz > Flow Smoothness: 1 Hz > > Horrible, isn't it? I deliberately left these machines with standard configurations in order to show that. Perhaps a tangential 2 cents from me, but I'm unclear how helpful Hertz is as a unit of measurement for the challenge of raising awareness of bufferbloat. I suspect data networking people (whether network designers, admins, product managers, etc) don't think of IP networks as having characteristics measured in Hertz. And I'd imagine most ISP helpdesks wont know how to parse customer complaints along the lines of "your service doesn't give me enough Hertz". Perhaps your tool could also add a parenthetical 'translation' of the responsiveness and smoothness values into something expressed in milliseconds? cheers, gja