From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-12-ewr.dyndns.com (mxout-126-ewr.mailhop.org [216.146.33.126]) by lists.bufferbloat.net (Postfix) with ESMTP id 4C5972E0044 for ; Sun, 20 Mar 2011 13:53:28 -0700 (PDT) Received: from scan-12-ewr.mailhop.org (scan-12-ewr.local [10.0.141.230]) by mail-12-ewr.dyndns.com (Postfix) with ESMTP id 91719933201 for ; Sun, 20 Mar 2011 20:53:27 +0000 (UTC) X-Spam-Score: 0.1 () X-Mail-Handler: MailHop by DynDNS X-Originating-IP: 75.145.127.229 Received: from gw.co.teklibre.org (75-145-127-229-Colorado.hfc.comcastbusiness.net [75.145.127.229]) by mail-12-ewr.dyndns.com (Postfix) with ESMTP id C70BD932FE7; Sun, 20 Mar 2011 20:53:26 +0000 (UTC) Received: from cruithne.co.teklibre.org (unknown [IPv6:2002:4b91:7fe5:1::20]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "cruithne.co.teklibre.org", Issuer "CA Cert Signing Authority" (verified OK)) by gw.co.teklibre.org (Postfix) with ESMTPS id 2BF5E5E8A2; Sun, 20 Mar 2011 14:53:26 -0600 (MDT) Received: by cruithne.co.teklibre.org (Postfix, from userid 1000) id 95F26120889; Sun, 20 Mar 2011 14:53:24 -0600 (MDT) From: d@taht.net (Dave =?utf-8?Q?T=C3=A4ht?=) To: grenville armitage Organization: Teklibre - http://www.teklibre.com References: <0D59AD34-AA64-4376-BB8E-58C5D378F488@gmail.com> <4D829B58.1070601@swin.edu.au> <4D8664A9.5060805@swin.edu.au> Date: Sun, 20 Mar 2011 14:53:24 -0600 In-Reply-To: <4D8664A9.5060805@swin.edu.au> (grenville armitage's message of "Mon, 21 Mar 2011 07:33:45 +1100") Message-ID: <871v21fr97.fsf@cruithne.co.teklibre.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: bloat-devel , bloat 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 20:53:28 -0000 grenville armitage writes: > 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? Concur. And resolution past 3 significant digits from there seems possible with posix timers. I regret that I have not had time to look over the code yet this weekend. How'd they do debloated? > > cheers, > gja > _______________________________________________ > Bloat-devel mailing list > Bloat-devel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat-devel -- Dave Taht http://nex-6.taht.net