From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-x22f.google.com (mail-lf0-x22f.google.com [IPv6:2a00:1450:4010:c07::22f]) (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 22A813BA8E for ; Tue, 5 Jun 2018 13:24:26 -0400 (EDT) Received: by mail-lf0-x22f.google.com with SMTP id y72-v6so4828458lfd.2 for ; Tue, 05 Jun 2018 10:24:26 -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=tXlcgIDnxYiWWXx77gR3I3nUN17FAW2HvX8uBXX+Xeg=; b=JXt824rdw+HOfOWwdnzVb+5P5cG36aQipmwzVgCqb+0Jp+MN9+ATc6lC5co6gUvOq7 DCvQtxIeBX/b9c2UkiWGxjTT4Pq3c4dB0hnT0uz3g4eGDTwPUnuPQAm28XJ1rWpC65LN Ax2KlTTv1GKiLznApytj8vRXoezlBffb3kWyY66Z14zM2uE7ERlG4yYDPiGXxnvWOEN7 GsKRcLPV9jfApue8CHR/juqiB3tE/+JVaRe3JonfAJCfSwR4Zc4MI0mXvFu3R2QQR4Gn xvLySyX5qOrUtTHgLc3wd9zljVJS93QWbHO4bku8X9ybhweB4xQ1RSfgeWQWmPvjTVa7 qTrw== 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=tXlcgIDnxYiWWXx77gR3I3nUN17FAW2HvX8uBXX+Xeg=; b=sKXl/u+rqDESYizM6YNVAx/P3+wAebEedBqw5iBkLd9idKS4AXvy72i5bfn3puAYhi mJyeOZHmA0oh96upK9yiaE4Bza/DDQ1xfAgKNZw1c7QMZgkJWcrFN7mOIPJ8cST3/ZTG mkfwUBnPv5puxi0/9l8/AkqeYjmkD03k1JF1gme6caq1BNRpDSl8ApSsy0TWBP71Avfp VH3OFzxiDBWwPQN4hLQyxwNsR/YPL1srrPNHqwoK/m/uig3kKD5mU9SeAKH0nX9MdAUZ lf7lZUOWGPe45msLKrUhkTrjUo9Wh+sVDPa3J7Dq/weJMk+18B6D6YRr7i5QvKRURO1z mPfQ== X-Gm-Message-State: APt69E1Fw0fxeF2laNfsDBW2U+KifeZJqe4n3ZCAg30vnHGBrPC2mupT oOaq+IWsJdKAYZSp6i1AnNrwJ7Yw X-Google-Smtp-Source: ADUXVKI5+AnFx+q4ypeJrBHBs3paJMMyST9NgER+6ZLPLPyGkg8MANqA2CzLayKfolgH6ce4tjFagg== X-Received: by 2002:a2e:8682:: with SMTP id l2-v6mr9556591lji.48.1528219465036; Tue, 05 Jun 2018 10:24:25 -0700 (PDT) Received: from [192.168.239.216] (83-245-236-31-nat-p.elisa-mobile.fi. [83.245.236.31]) by smtp.gmail.com with ESMTPSA id u3-v6sm3331684ljk.83.2018.06.05.10.24.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Jun 2018 10:24:24 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.3 \(3445.6.18\)) From: Jonathan Morton In-Reply-To: <61E48C91-AEF9-4FF4-9F83-45EC7148EC54@jonathanfoulkes.com> Date: Tue, 5 Jun 2018 20:24:22 +0300 Cc: bloat Content-Transfer-Encoding: quoted-printable Message-Id: <4737281C-9836-4155-86DB-D8A4097F1889@gmail.com> References: <152717340941.28154.812883711295847116.malone@soybean.canonical.com> <4f67f9b3-05a1-8d15-0aee-dfe8ea730d7c@gmail.com> <73c25a21-0ace-b5ee-090e-d06fb3b8dc60@kit.edu> <3F65061F-4F05-4F3F-8A43-FFCC1D27F585@gmail.com> <61E48C91-AEF9-4FF4-9F83-45EC7148EC54@jonathanfoulkes.com> To: Jonathan Foulkes X-Mailer: Apple Mail (2.3445.6.18) Subject: Re: [Bloat] [Bug 1436945] Re: devel: consider fq_codel as the default qdisc for networking X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Jun 2018 17:24:26 -0000 > On 5 Jun, 2018, at 6:10 pm, Jonathan Foulkes = wrote: >=20 > Jonathan, in the past the recommendation was for NOECN on egress if = capacity <4Mbps. Is that still the case in light of this? I would always use ECN, no exceptions - unless the sender is using a TCP = congestion control algorithm that doesn't support it (eg. BBR = currently). That's true for both fq_codel and Cake. With ECN, codel's action doesn't drop packets, only resizes the = congestion window. - Jonathan Morton