From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [IPv6:2a00:1450:4864:20::12e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 3A6523B29E for ; Sat, 16 Mar 2019 09:37:58 -0400 (EDT) Received: by mail-lf1-x12e.google.com with SMTP id y18so8808095lfe.1 for ; Sat, 16 Mar 2019 06:37:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=9B9bmXbL8kvhi17mSzJAj8AEeN2qUGjESEqd4mjx1JM=; b=SfOUJSgHae7dN46DAveiP7WfAQ6TPXycVFH6d0n/Aog6vYqFZ8/NL5i1ZwVWVP50bH FRIwaLrSiRIpR+HOfIBGyf/Zr9t3Aex+MhjiWl+LB3mCwXO3nGHKLSbax3d70sdIRk1y voi4yt29QBjK0AmYhUntxkW0TxXhu2olXe2lvGl6THJkBL5XwB1lqJoSpr0qmg6j+1A0 gAxe02yaQlhFKr0E7vSDi0At/YTYkyz2OOEbfWqhNEKxq7zx0/t09Dm9Fp8fA4C8BaOq pC8Nz9QeP9b0STOuKPY7LJtm3vDnDRU/6gVwCyuw35OakYXmy9buLMnyDmG9/r02FdaR MBPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=9B9bmXbL8kvhi17mSzJAj8AEeN2qUGjESEqd4mjx1JM=; b=YI6a863MprTfEPH/TjcB+azqdAk7x2PmNG+Q3Yx3Y2QZT7/wvhM0LH2N8tZo10Cdda awWNMOM5zoOwL5Hel3Wo5qLDLAfg76n1vzEu1NuC4cWXKf27NXTaiw/DADbJUDbBB3Dz 5N0NX/NBScy0hDgUXeXX3JVze6q4vs6jofX8A3UfJ9zAJqWOvugJprWHFsXzbrz9vKjK I1ElB4UeED1vsSNS7Cgl1ghjDlvj1M2GFFBpK6fW1cIKeYsJ0oGbxywIp0/EQPH4FMea 3bVXywrSXzw1M9MiauYsv/HES5jqTH8Q7GF+lnddXZRjjp+LPz4kJGacKA2rF8f/0Z43 ricA== X-Gm-Message-State: APjAAAXWx5vBvNoIk0mk0wIrmaBE1cRvQbmpHubnokTiushzl80JWHjG 2Z5Kas89tQdnvEBlWwu4Nk0= X-Google-Smtp-Source: APXvYqzgvDADhjKDarPPhj9LYuXOy9d6DUmMbbExYFkNUhW8B1Ouq9ri3/od2MGIwpNw9gwNBe5B7w== X-Received: by 2002:a19:f208:: with SMTP id q8mr1706067lfh.107.1552743477141; Sat, 16 Mar 2019 06:37:57 -0700 (PDT) Received: from jonathartonsmbp.lan (83-245-227-44-nat-p.elisa-mobile.fi. [83.245.227.44]) by smtp.gmail.com with ESMTPSA id 15sm876094lft.88.2019.03.16.06.37.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 16 Mar 2019 06:37:56 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Jonathan Morton In-Reply-To: <862FC3E9-1059-4722-BF3E-6036DC176400@heistp.net> Date: Sat, 16 Mar 2019 15:37:55 +0200 Cc: ecn-sane@lists.bufferbloat.net Content-Transfer-Encoding: quoted-printable Message-Id: <63960772-B30A-46FC-A0BE-90419E126FE7@gmail.com> References: <862FC3E9-1059-4722-BF3E-6036DC176400@heistp.net> To: Pete Heist X-Mailer: Apple Mail (2.3445.9.1) Subject: Re: [Ecn-sane] proving out SCE X-BeenThere: ecn-sane@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussion of explicit congestion notification's impact on the Internet List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Mar 2019 13:37:58 -0000 > On 16 Mar, 2019, at 12:11 pm, Pete Heist wrote: >=20 > I=E2=80=99m starting to read Jon=E2=80=99s proposal for modifying TCP = CC for SCE = (https://github.com/dtaht/bufferbloat-rfcs/blob/master/sce/ELR%20Proposal%= 203%20(TCP).txt), and get the (perhaps misplaced) feeling that it=E2=80=99= s not that big a stretch to implement, and that proving basic efficacy = may not be that hard. I=E2=80=99d like to do what I can to help before = IETF, so please do post what needs doing, and meanwhile I=E2=80=99ll = just keep reading. It'd be really nice to have a complete proof-of-concept implementation = that we can pull real numbers out of, even if it's just a bare-minimum = spitball in ns-3 or the like. There exists an implementation of COBALT in ns-3 now, though I doubt = it's mainlined. Adding a raw SCE threshold to that, or to the Codel = implementation that *is* mainlined, should be easy. Maybe adding = support to NewReno in it would also be feasible? Which option for = sender feedback would be easiest in that context? > p.s.- at least we don=E2=80=99t have to justify bifurcating Internet = congestion control That is certainly a major motivating factor. - Jonathan Morton