From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-22-ewr.dyndns.com (mxout-045-ewr.mailhop.org [216.146.33.45]) by lists.bufferbloat.net (Postfix) with ESMTP id 5CDDA2E020F for ; Wed, 16 Feb 2011 15:35:41 -0800 (PST) Received: from scan-21-ewr.mailhop.org (scan-21-ewr.local [10.0.141.243]) by mail-22-ewr.dyndns.com (Postfix) with ESMTP id B44BE31F11 for ; Wed, 16 Feb 2011 23:35:40 +0000 (UTC) X-Spam-Score: -1.0 (-) X-Mail-Handler: MailHop by DynDNS X-Originating-IP: 209.85.216.178 Received: from mail-qy0-f178.google.com (mail-qy0-f178.google.com [209.85.216.178]) by mail-22-ewr.dyndns.com (Postfix) with ESMTP id 4A64831D13 for ; Wed, 16 Feb 2011 23:35:35 +0000 (UTC) Received: by qyk33 with SMTP id 33so1892624qyk.16 for ; Wed, 16 Feb 2011 15:35:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc:content-type:content-transfer-encoding; bh=ZuRXxVHF3vt8cEu8MxV2DpI30PySSOBZr1EYQE1OLJQ=; b=Cx0/NycvABZAV4SFE0DhalqFgCJG0bMweaa3AJfciX5ExZ7zCyy5i077yRsD3xr+7O tu7sfFeITWgjqCoS+q03qyUb9/xN2u9JH6wFoFnD0ri5yIzR7Bi3+21kpveXiVUZEjPl 3kelt7mQI6oHJhks76Gzc+zdQAerMPWdCh2AQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type:content-transfer-encoding; b=Ufqjha8I9YBSf1KwsDAtzTNEXVHeFM/SWN1vrIMzupzAQP/mTY7ko+RCVognEWJlj2 yOn5AA9mqc9oKhOt45mNVE1kCIuhbKs8/qZ6T0S3wGtltkXGJBp4hns4REdk1S2XvnWW nN/eEPEVLmou+fZN87LgB40Qq7xKoEXv1x/jE= Received: by 10.229.212.6 with SMTP id gq6mr1450662qcb.150.1297899334897; Wed, 16 Feb 2011 15:35:34 -0800 (PST) MIME-Version: 1.0 Received: by 10.229.183.85 with HTTP; Wed, 16 Feb 2011 15:34:39 -0800 (PST) In-Reply-To: <6F4E15F3B5314030A7C34DCC49395D8B@srichardlxp2> References: <20110216174627.GA20215@brevard.conman.org> <6F4E15F3B5314030A7C34DCC49395D8B@srichardlxp2> From: Jesper Louis Andersen Date: Thu, 17 Feb 2011 00:34:39 +0100 Message-ID: To: Richard Scheffenegger Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: bloat@lists.bufferbloat.net Subject: Re: [Bloat] Background Bufferbloat Detector 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: Wed, 16 Feb 2011 23:35:41 -0000 On Wed, Feb 16, 2011 at 20:03, Richard Scheffenegger wrote= : > > Perhaps Bittorrent Clients can be used to export the one-way delay, as > measured by the =C2=B5TP protocol, to build an complementary background > bufferbloat detector [..] > > And, hosting legal content on one's own Bittorrent Client should provide > ample opportunity to get decent measurements, without the need to negotia= te > with someone else about taking readings off some debug-log from an NTP > server.... > The only "slight" problem is that not all clients support =C2=B5TP. You are limited to hacking either KTorrent 4.0+ (C++) or Vuze (Java). There are C clients in progression however (Transmission, libtorrent). My "own" client (in Erlang) has been putting off the implementation, mostly because I'd rather see TCP fixed :) But perhaps this could be a good opportunity to just hack up that protocol :) BitTorrent also has the advantage that it often connects to hosts from all over the world, so if there is any indication in the data, it should definitely be able to see a trend. --=20 J.