[Cake] Fwd: cake flenter results round 3

[Cake] Fwd: cake flenter results round 3

[Georgios Amanakis]

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I cannot attach the flent.gz files as they exceed the message size limit of
the list. Hopefully Dave got them.

---------- Forwarded message ----------
From: Georgios Amanakis <gamanakis@gmail.com>
Date: Fri, Dec 1, 2017 at 10:20 PM
Subject: Re: [Cake] cake flenter results round 3
To: Dave Taht <dave.taht@gmail.com>
Cc: Cake List <cake@lists.bufferbloat.net>


Just finished testing. CMTS Setup:
server   --   delay   --   isp   --   mbox   --   client
netserver     100ms      900mbit     810mbit      flent

I am attaching the setup, tried to implement all of Dave's suggestions.
I used the files:
vsetup.sh # topology
vcake.sh{.htb} # qdiscs
sshd.sh # start netserver, irtt etc.
stats.sh # generate the txt files with qdisc stats

Tested pfifo, cake, cake_flowblind, netem_codel, htb_codel, htb_pie,
htb_fq, htb_sfq.

In terms of latency cake_flowblind seems to be as good as
htb_{codel,pie,fq}.
htb_sfq outperforms it slightly.

George

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[Cake] Fwd: cake flenter results round 3

[Georgios Amanakis]

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---------- Forwarded message ----------
From: Georgios Amanakis <gamanakis@gmail.com>
Date: Fri, Dec 1, 2017 at 8:25 PM
Subject: Re: [Cake] cake flenter results round 3
To: Dave Taht <dave.taht@gmail.com>


The only thing in the CMTS setup 900mbit that appears to be close to cake
is rate limiting with netem and applying codel
 as sub-qdisc.

host=mbox
tc qdisc replace dev ${host}.l root handle 1:0 netem rate 890mbit
tc qdisc replace dev ${host}.r root handle 1:0 netem rate 890mbit
tc qdisc replace dev ${host}.l parent 1:1 handle 10:1 codel
tc qdisc replace dev ${host}.r parent 1:1 handle 10:1 codel


On Fri, Dec 1, 2017 at 4:41 PM, Georgios Amanakis <gamanakis@gmail.com>
wrote:

> 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:
> tc qdisc replace dev ${host}.l root codel
> tc qdisc replace dev ${host}.r root codel
>
>
> mbox:
> tc qdisc replace dev ${host}.l root fq maxrate 890mbit
> tc qdisc replace dev ${host}.r root fq maxrate 890mbit
>
>
> rrul_be_nflows, 32 upstream, 32 downstream. In every case cake wins.
>
> George
>
>

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