From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-x231.google.com (mail-lb0-x231.google.com [IPv6:2a00:1450:4010:c04::231]) (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 B30ED21F1BC for ; Wed, 18 Mar 2015 08:20:13 -0700 (PDT) Received: by lbbsy1 with SMTP id sy1so32184372lbb.1 for ; Wed, 18 Mar 2015 08:20:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=m/DbgjSuuZv3Wiz/rNTdRmOIULZRyNgtJwSofEmyRYU=; b=I+zA76vje7eOznpUKJ2V1m2T3yF+Fa+4HDR7T0lZ7jKrLBQ3FUAZkIok2xSV8N1RBK K0hmVZLrSJDEr18EWgegUvhP5v9XNWN5n64fS5nuQnDDzXFosmQwOA1JOjwH4gVmaunu kOq92ZeychZxIxVQYX2hlfHFdS5bWBpc4SsE2RJT4msDWg+FIyCnkf9uyV79Wf0WRina gbmnDSxEutv5kUnDA+sQw9nJd8/imexZcSjUrAdWy/FQSMBic20z3VcVJmtjJbKFp1Dz pt9peGw78EeHxFyPH7uLI0EN9oH6Jmmc5zEb9KM9DqqwUN4uyNKBYwchlMyxW/yfeIgy JMrQ== X-Received: by 10.112.73.104 with SMTP id k8mr63117498lbv.120.1426692011169; Wed, 18 Mar 2015 08:20:11 -0700 (PDT) Received: from [192.168.43.25] (188-67-138-157.bb.dnainternet.fi. [188.67.138.157]) by mx.google.com with ESMTPSA id x5sm3437574laa.44.2015.03.18.08.20.09 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 18 Mar 2015 08:20:10 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2070.6\)) From: Jonathan Morton In-Reply-To: <5509957B.30600@pollere.com> Date: Wed, 18 Mar 2015 17:20:05 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <491C7497-BE3E-452B-A797-C7FC1102E7ED@gmail.com> References: <7081A75C-899A-4DB7-8D77-935A37B362D8@gmail.com> <5509957B.30600@pollere.com> To: codel@lists.bufferbloat.net X-Mailer: Apple Mail (2.2070.6) Subject: Re: [Codel] The next slice of cake X-BeenThere: codel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: CoDel AQM discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Mar 2015 15:20:42 -0000 > On 18 Mar, 2015, at 17:10, Kathleen Nichols = wrote: >=20 > How are you relating target delay to bandwidth? Essentially, I use 5ms as a minimum, and increase it if necessary to = accommodate a couple of MTU-sized packets at the shaping rate. This = keeps things nicely under control at low bandwidths, and I find that = cake remains useful and usable even at 64Kbps (without making even the = usual adjustments to host or link configuration for such low speeds). I can do this in cake because the shaping rate is known, whereas the = pure codel and fq_codel qdiscs do not have reliable link-speed = information. - Jonathan Morton