From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ahern Subject: Re: [PATCH iproute2-next v11] Add support for CAKE qdisc Date: Thu, 19 Jul 2018 10:25:17 -0600 Message-ID: References: <20180719135617.31850-1-toke@toke.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Cc: cake@lists.bufferbloat.net, Dave Taht To: =?UTF-8?Q?Toke_H=c3=b8iland-J=c3=b8rgensen?= , netdev@vger.kernel.org Return-path: Received: from mail-pg1-f195.google.com ([209.85.215.195]:34304 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731442AbeGSRJO (ORCPT ); Thu, 19 Jul 2018 13:09:14 -0400 Received: by mail-pg1-f195.google.com with SMTP id y5-v6so4231711pgv.1 for ; Thu, 19 Jul 2018 09:25:19 -0700 (PDT) In-Reply-To: <20180719135617.31850-1-toke@toke.dk> Content-Language: en-US Sender: netdev-owner@vger.kernel.org List-ID: On 7/19/18 7:56 AM, Toke Høiland-Jørgensen wrote: > sch_cake is intended to squeeze the most bandwidth and latency out of even > the slowest ISP links and routers, while presenting an API simple enough > that even an ISP can configure it. > > Example of use on a cable ISP uplink: > > tc qdisc add dev eth0 cake bandwidth 20Mbit nat docsis ack-filter > > To shape a cable download link (ifb and tc-mirred setup elided) > > tc qdisc add dev ifb0 cake bandwidth 200mbit nat docsis ingress wash besteffort > > Cake is filled with: > > * A hybrid Codel/Blue AQM algorithm, "Cobalt", tied to an FQ_Codel > derived Flow Queuing system, which autoconfigures based on the bandwidth. > * A novel "triple-isolate" mode (the default) which balances per-host > and per-flow FQ even through NAT. > * An deficit based shaper, that can also be used in an unlimited mode. > * 8 way set associative hashing to reduce flow collisions to a minimum. > * A reasonable interpretation of various diffserv latency/loss tradeoffs. > * Support for zeroing diffserv markings for entering and exiting traffic. > * Support for interacting well with Docsis 3.0 shaper framing. > * Support for DSL framing types and shapers. > * Support for ack filtering. > * Extensive statistics for measuring, loss, ecn markings, latency variation. > > Various versions baking have been available as an out of tree build for > kernel versions going back to 3.10, as the embedded router world has been > running a few years behind mainline Linux. A stable version has been > generally available on lede-17.01 and later. > > sch_cake replaces a combination of iptables, tc filter, htb and fq_codel > in the sqm-scripts, with sane defaults and vastly simpler configuration. > > Cake's principal author is Jonathan Morton, with contributions from > Kevin Darbyshire-Bryant, Toke Høiland-Jørgensen, Sebastian Moeller, > Ryan Mounce, Tony Ambardar, Dean Scarff, Nils Andreas Svee, Dave Täht, > and Loganaden Velvindron. > > Testing from Pete Heist, Georgios Amanakis, and the many other members of > the cake@lists.bufferbloat.net mailing list. > > Signed-off-by: Dave Taht > Signed-off-by: Toke Høiland-Jørgensen > --- applied to iproute2-next. Thanks About the autorate, I think you should consider consistency in output.