From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x22f.google.com (mail-oi0-x22f.google.com [IPv6:2607:f8b0:4003:c06::22f]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id C830D21F5B5 for ; Thu, 25 Jun 2015 10:49:49 -0700 (PDT) Received: by oigx81 with SMTP id x81so58118817oig.1 for ; Thu, 25 Jun 2015 10:49:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=w/w1hwyYbv+o/TEwthP1+Df0naRpUjvAoQKwmcDb/Nw=; b=CkTfcbodk3dCguurSv6/eLl2JqRL3yvzCgDDuDP2i/ar+62lSFs+Zds710pVXC82Vu 70X9eZjnCJmTX2G0iF3FGpNtjVbbt9suXqFzci/31ONYaYqL9Ld+wJTaROJiqKJRKT6t UyveOPOCx48W/yFoKP0wE1KgpMcFpqj0Yo4XQDztqxvm3OVU13QG8bi9MAhcnLD4NZex DrKGrsgwy2CK5WSOH9h/wtIyXEJUKD42YmB6rvi+X7RFZU83kw9FYTqlR2gPZinOLEpI /bYXpjlYJtMMT1k/OjosgIMYCTJ/c35FCU5TFq8RBT5ApSh9LZQd1Nl4eTe2StlM+lgs eEpw== MIME-Version: 1.0 X-Received: by 10.182.230.4 with SMTP id su4mr21487999obc.0.1435254588919; Thu, 25 Jun 2015 10:49:48 -0700 (PDT) Received: by 10.202.105.129 with HTTP; Thu, 25 Jun 2015 10:49:48 -0700 (PDT) In-Reply-To: <04ED8D23-53C3-4F12-9647-3A07FFB43352@tik.ee.ethz.ch> References: <81564C0D7D4D2A4B9A86C8C7404A13DA34B30B4C@ESESSMB205.ericsson.se> <04ED8D23-53C3-4F12-9647-3A07FFB43352@tik.ee.ethz.ch> Date: Thu, 25 Jun 2015 10:49:48 -0700 Message-ID: From: Dave Taht To: =?UTF-8?Q?Mirja_K=C3=BChlewind?= Content-Type: text/plain; charset=UTF-8 Cc: "cheshire@apple.com" , "iccrg@irtf.org" , "Bob Briscoe \(bob.briscoe@bt.com\)" , Ingemar Johansson S , "bloat@lists.bufferbloat.net" , "ietf@trammell.ch" Subject: Re: [Bloat] ECN issues 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: Thu, 25 Jun 2015 17:50:18 -0000 In my case I just managed to show that congestive (rather than path) loss can be a factor in the reliability of even a low rate, CS6 prioritized, link local multicast routing protocol (babel), over present day linux wifi, even using a modern fq+aqm+ecn system. Enabling ECN markings in babel and watching for CEs while under load, here: http://snapon.lab.bufferbloat.net/~d/newrouters/linuxcap.cap I am not sure where to go with that, but I am deploying it at a small scale anyway, as gathering link local rtt information somewhat passively at the moment and point of congestion is important to guide my other work on wifi. No plans for a paper or presentation, it was just "interesting", let me know if you have any ideas in addition to this http://lists.alioth.debian.org/pipermail/babel-users/2015-April/001974.html as to where to go with it.