From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-x230.google.com (mail-qt0-x230.google.com [IPv6:2607:f8b0:400d:c0d::230]) (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 48BC33CB35 for ; Thu, 2 Nov 2017 14:17:19 -0400 (EDT) Received: by mail-qt0-x230.google.com with SMTP id k31so491208qta.6 for ; Thu, 02 Nov 2017 11:17:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=WJaZYzacjr0WYi2nN+qLWq3z/a9LLOvG96JP1DlVhfc=; b=EEo6OI5jII99rikfV7Z/LFR1iFi55hgUVTITzz0gjPMf66grxJtR9FgryuIT1k965O HVzoRe2dENHJUM7wjb8uhVFu5YOXiW3EuEaMInw4vUq1d59DofpkWeZC9tNpTQQx+lat XBY7OsEu5LHMPtAL6FOk9Udkm8ZcZWdN/hTMHKezSLEG2mIr8HqWXDyjGBjYkC1KEzaO +yl64CBTe7hnLWIvHaateKdOjuLhV+lG4FOArTbZxAbRn8aeoWequxin7OGXOBEqKTK3 4Sy7ZAmfytsy1gk5KbECOIUvNvcBZiy6EcFIrn3bUW0ZhvqvECqnSQW+fD1nFofddj/g HZBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=WJaZYzacjr0WYi2nN+qLWq3z/a9LLOvG96JP1DlVhfc=; b=Qb9UL85PC+aB+4j1MaQz8SihxQ1BgO72yRUhBs+y8SpDIOkUt9XUzNcfn6wjTmIjMS 0+74ePBB6znYTZQ0jatLpyShLmCPDlMmNRGyzZL7L01WAsnouGhD2KoDpEroCpX7jjra xT3YFr+9gCuhfCv4KmoO+jolOja8OUfpf/hjZCZMWyl/7TZ05l04mpHR27rB+S/1UGrF GP0mjjQ8i+dconS+YjW9jyGIRtxUp5G7FbXc4plD9xSqZ5MRS+FyEXyWemrN9UgLHVjB KJTG3VqurZJ2oe/bVsMg/uL4wPNlLzTWbq3x3l/z7sDxZe1EaNbRbKXxsA5fuFwEWg7G +QBQ== X-Gm-Message-State: AMCzsaWxLEDnwJjE99GNT27rhq3C3O1zTqgksrsBol2UiXeaLpTFljFJ hn5LIKq6Wo+XdT18S3ObkcMRcFquwH7Ux5eTAek= X-Google-Smtp-Source: ABhQp+R8pNQL1gD7reTqRAQP6g/CNdasmBuNo9ZsZsHJh/cVJP6K0ocFfygUevfxK7JtlKA7q7mBHHDq40k9DJdZgds= X-Received: by 10.200.27.116 with SMTP id p49mr6579304qtk.336.1509646638966; Thu, 02 Nov 2017 11:17:18 -0700 (PDT) MIME-Version: 1.0 Received: by 10.140.80.133 with HTTP; Thu, 2 Nov 2017 11:17:18 -0700 (PDT) Received: by 10.140.80.133 with HTTP; Thu, 2 Nov 2017 11:17:18 -0700 (PDT) In-Reply-To: <87efpgo9gy.fsf@nemesis.taht.net> References: <20171026171749.45134-1-jeffrey.t.kirsher@intel.com> <20171026171749.45134-2-jeffrey.t.kirsher@intel.com> <20171101222425.293b80ce@shemminger-XPS-13-9360> <87efpgo9gy.fsf@nemesis.taht.net> From: Jonathan Morton Date: Thu, 2 Nov 2017 20:17:18 +0200 Message-ID: To: =?UTF-8?Q?Dave_T=C3=A4ht?= Cc: Dave Taht , Cake List Content-Type: multipart/alternative; boundary="001a114e6204a6eb0f055d03ff6c" Subject: Re: [Cake] Fwd: [iproute2 1/2] tc: Add support for the CBS qdisc 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: Thu, 02 Nov 2017 18:17:19 -0000 --001a114e6204a6eb0f055d03ff6c Content-Type: text/plain; charset="UTF-8" I looked up how it's supposed to work. Seems like it relies on a fixed bandwidth underlying link, and piggybacks on its clocks to maintain the associated state in realtime. Obviously designed to be implemented in hardware using an adder and an accumulator, rather than on a CPU. The parameters required are a direct reflection of what such hardware requires, and are not at all user friendly. - Jonathan Morton --001a114e6204a6eb0f055d03ff6c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

I looked up how it's supposed to work.

Seems like it relies on a fixed bandwidth underlying link, a= nd piggybacks on its clocks to maintain the associated state in realtime.= =C2=A0 Obviously designed to be implemented in hardware using an adder and = an accumulator, rather than on a CPU.

The parameters required are a direct reflection of what such= hardware requires, and are not at all user friendly.

- Jonathan Morton

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