[Bloat] excellent result with OpenWrt 18.06.1 + CAKE on FTTH

[Mikael Abrahamsson]

On Mon, 12 Nov 2018, Dave Taht wrote:

> I guess my biggest question is how bloated is the "Before cake"
> version of the link?

Not very.

http://www.dslreports.com/speedtest/41693199

I then did another test while at the same time doing a different vendor 
speedtest:

http://www.dslreports.com/speedtest/41693256

Ping just increased 5-10 ms when doing this.

If I then re-enable cake with 250000/100000 I get:

http://www.dslreports.com/speedtest/41693346

qdisc after this last test:

qdisc cake 8034: dev eth1.2 root refcnt 2 bandwidth 100Mbit besteffort 
triple-isolate nonat nowash no-ack-filter split-gso rtt 100.0ms raw 
overhead 0
  Sent 391610860 bytes 650447 pkt (dropped 1430, overlimits 645558 requeues 
0)
  backlog 0b 0p requeues 0
  memory used: 2425408b of 5000000b
  capacity estimate: 100Mbit
  min/max network layer size:           46 /    1514
  min/max overhead-adjusted size:       46 /    1514
  average network hdr offset:           14

                   Tin 0
   thresh        100Mbit
   target          5.0ms
   interval      100.0ms
   pk_delay         82us
   av_delay          6us
   sp_delay          1us
   backlog            0b
   pkts           651877
   bytes       393761357
   way_inds        11602
   way_miss         3103
   way_cols            0
   drops            1430
   marks               0
   ack_drop            0
   sp_flows           16
   bk_flows            1
   un_flows            0
   max_len         18168
   quantum          1514

qdisc ingress ffff: dev eth1.2 parent ffff:fff1 ----------------
  Sent 896042971 bytes 760157 pkt (dropped 0, overlimits 0 requeues 0)
  backlog 0b 0p requeues 0
qdisc fq_codel 0: dev tun2025 root refcnt 2 limit 10240p flows 1024 
quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
  Sent 21580 bytes 166 pkt (dropped 0, overlimits 0 requeues 0)
  backlog 0b 0p requeues 0
   maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
   new_flows_len 0 old_flows_len 0
qdisc cake 8035: dev ifb4eth1.2 root refcnt 2 bandwidth 250Mbit besteffort 
triple-isolate nonat nowash no-ack-filter split-gso rtt 100.0ms raw 
overhead 0
  Sent 912501460 bytes 754253 pkt (dropped 5904, overlimits 926439 requeues 
0)
  backlog 0b 0p requeues 0
  memory used: 805712b of 12500000b
  capacity estimate: 250Mbit
  min/max network layer size:           60 /    1514
  min/max overhead-adjusted size:       60 /    1514
  average network hdr offset:           14

                   Tin 0
   thresh        250Mbit
   target          5.0ms
   interval      100.0ms
   pk_delay        650us
   av_delay        429us
   sp_delay          1us
   backlog            0b
   pkts           760157
   bytes       921432581
   way_inds        17426
   way_miss         3168
   way_cols            0
   drops            5904
   marks               0
   ack_drop            0
   sp_flows            7
   bk_flows            1
   un_flows            0
   max_len         15104
   quantum          1514


it seems to smoothe out the flows better than my ISP shaper.

These tests are done when rest of people in the household was also using 
Internet for other things, so not "clean room".

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se