From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) (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 538693B29E for ; Tue, 22 Oct 2019 17:02:46 -0400 (EDT) Received: by mail-lj1-x22d.google.com with SMTP id j19so18710624lja.1 for ; Tue, 22 Oct 2019 14:02:46 -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=+8tIbcfKymCBJlH60W+G5MUYfZlKjzegl6We5Dib7Pw=; b=h479iGLLplgVHDf9bNmi6m0P4t8nYeT/SpCOvgs8r/KEEkr9rn5JHZIzhhfYg0AEOf butt+TP7V1s1NOm7gRnDPj1/OMY/Ka9uIEo76Y5L+JybM0bdp8xkthmWOHbGLAVmm+IU fYVlTcSW0JgYfC8jkDsg+Is3cCHVDOhBpqSLGleyqLyrtxg2UJsgasdB6LNU1iqCCfFG BzBYoWawdGVqxbfgvURr7Ezf0Z2ybwZj9YUH3S7/kVv8u5yxCu/O+/Lp9Q/estS57b8Y Bygi6yfyBVFXAX99/ELrviefXUmj1z1sondwiO5TjyhnQ/sFuSxDvxkvVfYIWPwst03a 0Eeg== 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=+8tIbcfKymCBJlH60W+G5MUYfZlKjzegl6We5Dib7Pw=; b=E23JrfS5r8z8RRQwwjeMuQ0usu/vG5iGCwhxEH4zY6Jli8enmxxSVYauIFyiv60Fye 8Iqmtuf5/Sy/VmqHqqX2Tflbds9RumyB7Oa9eLRdK/12d0zbTTgJvmaHQk46RSyEU+mK +1+aIl8dx1ItEdmuIbRcexCF3McYMyjJ9FADTSuBW88lZlqhyC3z4RKwmL8LcAf3VAOr ADOXmeDhyF1lciRv6/+kBdJV8pOT46+rvpEz9YLtyRN7BnzM425E95uRtfdnzJv7rwkR H3fP5Zn8v9qbxsRQsxUrEUNFKiNaO2k7AVvqpYWxNUKl67V+saGs7TaZSZyjLwkQ+EUZ 1wCQ== X-Gm-Message-State: APjAAAV5cAiLeCho/A+8dqilbIb7j0LMO3x0pmZhUEJFAbFlT0JK66gc aRuai+MvLr+p/lNgumRY1LWNEmgu X-Google-Smtp-Source: APXvYqx9utkezJYAr7UujIM/g77hwSHhiEdTKQGCjsyLBzTA5fc2qRCKVa9br4qM9UVNeDhAJGEhdA== X-Received: by 2002:a05:651c:292:: with SMTP id b18mr17612634ljo.167.1571778165045; Tue, 22 Oct 2019 14:02:45 -0700 (PDT) Received: from jonathartonsmbp.lan (83-245-240-171-nat-p.elisa-mobile.fi. [83.245.240.171]) by smtp.gmail.com with ESMTPSA id o3sm5572141lji.49.2019.10.22.14.02.43 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 22 Oct 2019 14:02:43 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Jonathan Morton In-Reply-To: <775be8cd393d47aabdac5097e9ae054c@icow-systems.com> Date: Wed, 23 Oct 2019 00:02:42 +0300 Cc: "bloat@lists.bufferbloat.net" Content-Transfer-Encoding: quoted-printable Message-Id: <51AC6A1E-FF96-4B9C-B322-4EA986AE4BAA@gmail.com> References: <775be8cd393d47aabdac5097e9ae054c@icow-systems.com> To: Guillaume ROBIER X-Mailer: Apple Mail (2.3445.9.1) Subject: Re: [Bloat] Bufferbloat on 4G Connexion 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, 22 Oct 2019 21:02:46 -0000 > On 11 Oct, 2019, at 5:56 pm, Guillaume ROBIER = wrote: >=20 > I am new to this mailing list and I discovered the bufferbloat in = December 2018. I work on 4G routers and the bufferbloat is very present = on this type of link (4G). I contact you today to find out if people = have experimented with solutions on this type of link or have = configuration suggestions, because the classic fq_codel or piece_of_cake = and pie do not allow to fix the bufferbloat. This is actually my own situation at home. My solution is to insert = Cake shapers on both upstream *and* downstream directions, and adjust = their bandwidth settings according to variations in available 4G speed. = To do this I use an IQrouter, which is basically a TP-Link Archer C7 = with custom firmware. One of the difficulties with 4G in particular is that the link capacity = varies a great deal according to both radio propagation conditions = (weather, obstructions) and local usage by other subscribers. That = means the right bandwidth setting for the small hours of the night, when = nobody is awake, will leave you with a lot of bloat in the evening, when = everyone is both awake and home from school/work. You will need to = measure these trends and set up a bandwidth schedule accordingly. - Jonathan Morton=