From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-x243.google.com (mail-lf0-x243.google.com [IPv6:2a00:1450:4010:c07::243]) (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 CF1D73B2A3 for ; Sun, 19 Feb 2017 00:50:46 -0500 (EST) Received: by mail-lf0-x243.google.com with SMTP id x1so6591101lff.0 for ; Sat, 18 Feb 2017 21:50:46 -0800 (PST) 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=Rb40fCagCDgfG/Q0fzH/gOrr5dIrVD7BROAHbBogFDw=; b=Ww7CSgI9tUFvhcEL00ckBDnzUS11z9+i33A53Rr9sqvL5eXleFnfvyiwdn6JwA9bvO ro69101fp8SyKqejFYByVknAgskKy0orWSVWb6xogjdHejVfk/wpdJjcCTu8WJP+o5u4 3jXhPoyFCzSYIhR0ms8Dzh6LugD7RSykywHq/Dh8PZzEGVLtxdXTvNyv9/fdQNdlBXxX 1/bv0cXQp5DzknkmXTG5ET5x5gijNanoWxJ85rdKVVeK/nKYEoIkdpiq9YfIPgBlSdNb 7h2Upk2zp2oegibxH6ECBC5Ho+LL5Peoef+QjbdpadrQHdwE+rxDERilzsxcM2qu9/jF VEmw== 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=Rb40fCagCDgfG/Q0fzH/gOrr5dIrVD7BROAHbBogFDw=; b=TCiK0yb2zITlACQWpi1L0Vbyr0RSoWBAo9NcwUZfCAtz22qmNTOQ6CGyP2v/+rcgMR lapxLFjAwbMaf8WRqgMwtBcfFASqtW/06dT/g6KjQZzwlzrTZPrbrjG0n84IWB/yFvqf tkirzsnLzUKhxngSzpI2IpWWX/Ps6j89FElTaAer+RS6byOKTUzdW5xQ0j+XKYlLXOx4 5FQMFEMesi9mX6ddBaWhVgyWXfFfIkDSGbtAlOIOk2/HXh9poHO7fPLFvA2JxYovng0s 05y3iARtYQHnJ3kkHrboZP2PafkKUuX0cir8pTXPt+zS2MKDZ0IthuDSiI8DzssJtQBa XTpw== X-Gm-Message-State: AMke39m6fV+3oG22zzmqJhoAe6NKBVYHFxAaAF1AiG4yiruLxuG+30VYsW8/ZES2McBeNg== X-Received: by 10.25.125.197 with SMTP id y188mr721641lfc.120.1487483445661; Sat, 18 Feb 2017 21:50:45 -0800 (PST) Received: from [192.168.100.16] (37-219-206-78.nat.bb.dnainternet.fi. [37.219.206.78]) by smtp.gmail.com with ESMTPSA id i4sm2747315lfe.68.2017.02.18.21.50.44 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sat, 18 Feb 2017 21:50:44 -0800 (PST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) From: Jonathan Morton In-Reply-To: Date: Sun, 19 Feb 2017 07:50:39 +0200 Cc: make-wifi-fast@lists.bufferbloat.net Content-Transfer-Encoding: quoted-printable Message-Id: References: To: Marty X-Mailer: Apple Mail (2.3124) Subject: Re: [Make-wifi-fast] Best sqm config for a 2.4G wifi WAN uplink X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 Feb 2017 05:50:47 -0000 > On 19 Feb, 2017, at 05:45, Marty wrote: >=20 > Let me know if this is not a good place to ask about this, and I'm > asking blind without having searched the archives because I couldn't > find a way to search them. >=20 > Anyway, what are some recommendations for configuration of sqm on > OpenWRT with a wifi WAN connection? >=20 > The Link Layer Adaptation setting particular spurred my curiosity. There are two important things to consider here: 1: Wifi is not a conventional wired link with a fixed bitrate and = externally-predictable overhead. Far from it. The linklayer adaptation = system therefore does not apply to it. Instead, you need to apply AQM directly to the interface in a wifi-aware = manner, as the latest =E2=80=9Cmake wifi fast=E2=80=9D patches do. = These do not require configuration - if they=E2=80=99re in, they just = work. 2: Your WISP might have a provisioning shaper or policer on your = traffic, separate from the wifi link itself, to stop you from hogging = the bandwidth shared by other customers. If so, you should configure = SQM to match it. Most such shapers do not take linklayer overheads into account, so = unless you have evidence to the contrary, leave the adaptation switched = off here too. - Jonathan Morton