From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dave@taht.net>
Received: from mail.taht.net (mail.taht.net [176.58.107.8])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by lists.bufferbloat.net (Postfix) with ESMTPS id 878693B29E
 for <cake@lists.bufferbloat.net>; Fri,  1 Dec 2017 20:23:56 -0500 (EST)
Received: from nemesis.taht.net (unknown
 [IPv6:2603:3024:1536:86f0:2e0:4cff:fec1:1206])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by mail.taht.net (Postfix) with ESMTPSA id 0FB3B2144D;
 Sat,  2 Dec 2017 01:23:54 +0000 (UTC)
From: Dave Taht <dave@taht.net>
To: Georgios Amanakis <gamanakis@gmail.com>
Cc: Dave Taht <dave.taht@gmail.com>,  Cake List <cake@lists.bufferbloat.net>
References: <98B33089-BA99-40C2-8C25-B4568505AAC6@gmail.com>
 <CAJq5cE2QwM-S=f0UdDmbFhCxn5zh-NLv-wbZHH+xTPB9dP6OeQ@mail.gmail.com>
 <CACvFP_gTBG_nE3F_CnU_9oGeUSpQWikvVqkQaQvQyQwyiF3S0w@mail.gmail.com>
 <CAA93jw7oGMx_f8qzTQJomfgiiz39T5iw_Axu5nLRndniTLgeJg@mail.gmail.com>
 <CACvFP_hDLL7V149f1wGW6LUzNy50WO9dLYYMabYJcu2k_nh9Eg@mail.gmail.com>
 <CAA93jw4mUx0Xu4z0B_nFYny3wBDKfTOi6a=srNmMwK1TVkw3hQ@mail.gmail.com>
 <CAA93jw6g_eg3AJ6r+1DjZRz4TQ+TVsq6fg-CTgKMKBCjkqW_AA@mail.gmail.com>
 <CACvFP_j95vk8Gxi7t_v2KBc+8GAHCRucs9DE=9qZuQyCHnPL3w@mail.gmail.com>
Date: Fri, 01 Dec 2017 17:23:53 -0800
In-Reply-To: <CACvFP_j95vk8Gxi7t_v2KBc+8GAHCRucs9DE=9qZuQyCHnPL3w@mail.gmail.com>
 (Georgios Amanakis's message of "Fri, 1 Dec 2017 16:41:24 -0500")
Message-ID: <87zi71gbx2.fsf@nemesis.taht.net>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)
MIME-Version: 1.0
Content-Type: text/plain
Subject: Re: [Cake] cake flenter results round 3
X-BeenThere: cake@lists.bufferbloat.net
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Cake - FQ_codel the next generation <cake.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/cake>,
 <mailto:cake-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/cake>
List-Post: <mailto:cake@lists.bufferbloat.net>
List-Help: <mailto:cake-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/cake>,
 <mailto:cake-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Sat, 02 Dec 2017 01:23:56 -0000

Georgios Amanakis <gamanakis@gmail.com> writes:

> Thank you Dave!
> I am playing around with this setup:
> server -- delay -- isp -- mbox -- client
>
> delay:
> tc qdisc replace dev ${host}.l root netem delay 50ms limit 100000
> tc qdisc replace dev ${host}.r root netem delay 50ms limit 100000
>
> isp:
> tc qdisc replace dev ${host}.l root handle 1:0 netem rate 900mbit limit 100000
> tc qdisc replace dev ${host}.r root handle 1:0 netem rate 900mbit limit 100000
> tc qdisc replace dev ${host}.r parent 1:1 handle 10:1 bfifo limit 1024k
>
> I played with mbox's qdiscs (3 variations).
> mbox:
> tc qdisc replace dev ${host}.l root cake bandwidth 890mbit
> tc qdisc replace dev ${host}.r root cake bandwidth 890mbit
>
> mbox:

a reference run with

tc qdisc del dev mbox.l root
tc qdisc del dev mbox.r root

# this may already be our default.

tc qdisc add dev mbox.l root pfifo-fast limit 1000
tc qdisc add dev mbox.r root pfifo-fast limit 1000

> tc qdisc replace dev ${host}.r root codel

Here a definition of a win has to also include a shaper, like
cake's integral one.

tc qdisc replace dev ${host}.r root handle 1:0 netem \
   rate 890mbit limit 100000
tc qdisc replace dev ${host}.r parent 1:1 handle 10:1 \
   codel

(same for .l)

I note that I still trust htb's shaper further tha netem's...

(substitute pie, fq, sfq, etc for codel above)

(did I jump for joy too soon on the fq_codel vs sfq front?)

>
> mbox:
> tc qdisc replace dev ${host}.l root fq maxrate 890mbit
> tc qdisc replace dev ${host}.r root fq maxrate 890mbit

maxrate only puts a cap on each flows peak sending rate.

> rrul_be_nflows, 32 upstream, 32 downstream. In every case cake wins.
>
> George
>
>
>
>
>
>
>
>
>
> _______________________________________________
> Cake mailing list
> Cake@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cake