From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-x241.google.com (mail-lf0-x241.google.com [IPv6:2a00:1450:4010:c07::241]) (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 13C533BA8E for ; Mon, 6 Mar 2017 09:45:04 -0500 (EST) Received: by mail-lf0-x241.google.com with SMTP id y193so11795604lfd.1 for ; Mon, 06 Mar 2017 06:45:04 -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=8b05SQfU8dvFuk6L3jjqfzikuuWNNqfW6NUM3rVgU+A=; b=RYcsSjrNrE50Zjm3Nqz/qnP4Uw5LeYf9V7zM42MJG7woh+sdguZd9129/vL16jRBOp 6cKpxRXatwAlpex+IcK/uNCN2EAbK/RNMh/8RkjjcabIcRSaXmt/gtMFH6cng/yLvsiq GYkvsH7fMiC8FcHAuXh3I98NbhjKEOa2zK8DGiL0vWYSmDUZoITCDrV7543xrktIufqs fomgKiNeAdXQslaJ+78paN4zYXxaDDuWjdQBKtKDCIXHtUsFwoxnzCK6B8P8FkNbsh+Z L2S9xUU2joW/6WjCp0e3p+HjBVmmdVNfNV6b3H/qKMWV5xURuiy28baccfaU2vC+yzfl rKqQ== 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=8b05SQfU8dvFuk6L3jjqfzikuuWNNqfW6NUM3rVgU+A=; b=Pipd/TQL7ayHu91gqQwAKY1ScEd5fXhE6oVIXpNLAgZjhh2A0TDFsl9912HLGTDRUK bdXalD/yVMhKPvFh5dCKn2xQUeJzQDS7F4iZRW5iidWWwZKBod9qokTUcBhb4s32uOD6 OA0LSQ91sK3ixJYUHV/LRAB3tYAhzla1f8j0bsuPc0vQ6rJcMKfim5ch2+aVeUm92mWH RwBThvgv9UbbIlIMBgSDjwvc+IazVdYKe9IlwMtCpX9oWHTZQHoEPWTSXqInozbYKgon 5+ggGz9EOODxb+7vAuth9f55+WGBYeR61SAE58u07KgBcFgZzFDtO/j0+9yhKvqrAd19 shwA== X-Gm-Message-State: AMke39n3GoygxTgrCg6MNE6wICYxEgdFnYeYO6gpGbI2bNiNSudvE4bmHAQOuRnb7ZnMcA== X-Received: by 10.25.0.207 with SMTP id 198mr5218157lfa.134.1488811503863; Mon, 06 Mar 2017 06:45:03 -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 x1sm4197604lfb.54.2017.03.06.06.45.01 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 06 Mar 2017 06:45:03 -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: Mon, 6 Mar 2017 16:44:58 +0200 Cc: Dave Taht , "cake@lists.bufferbloat.net" , Eric Luehrsen Content-Transfer-Encoding: quoted-printable Message-Id: <43E2473F-9DFC-48D4-A4E2-A41802E8004F@gmail.com> References: <07479F0A-40DD-44E5-B67E-28117C7CF228@gmx.de> <1488400107.3610.1@smtp.autistici.org> <2B251BF1-C965-444D-A831-9981861E453E@gmx.de> <1488484262.16753.0@smtp.autistici.org> <98E899EF-5E66-42CC-88AA-79FA80A4F228@gmail.com> <2D2AE632-75BB-4DDE-B370-0996EFECF14B@gmail.com> To: Benjamin Cronce X-Mailer: Apple Mail (2.3124) Subject: Re: [Cake] [LEDE-DEV] Cake SQM killing my DIR-860L - was: [17.01] Kernel: bump to 4.4.51 X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Mar 2017 14:45:05 -0000 > On 6 Mar, 2017, at 15:30, Benjamin Cronce wrote: >=20 > You could treat it like task stealing, except each core can generate = tokens that represent a quantum of bandwidth that is only valid for some = interval. You=E2=80=99re obviously thinking of a token-bucket based shaper here. = CAKE uses a deficit-mode shaper which deliberately works a different way = - it=E2=80=99s more accurate on short timescales, and this actually = makes a positive difference in several important cases. The good news is that there probably is a way to explicitly and = efficiently share bandwidth in any desired ratio across different CAKE = instances, assuming a shared-memory location can be established. I = don=E2=80=99t presently have the mental bandwidth to actually try doing = that, though. - Jonathan Morton