[Cake] 450 up stream test

[Dave Taht]

I was finally able to induce "way" collisions and codel was not able
to successfully control the depth of the queue in this test of 9
copies of the 50 up test....

root at nuc-client:~/git/iproute2-cake# tc -s qdisc show dev eth0
qdisc cake 8003: root refcnt 2 bandwidth 920Mbit diffserv4 flows
 Sent 13826214606 bytes 10775480 pkt (dropped 187301, overlimits
7841897 requeues 79)
 backlog 1732937b 769p requeues 79
           Class 0     Class 1     Class 2     Class 3
  rate       920Mbit  862500Kbit     690Mbit     230Mbit
  target       5.0ms       5.0ms       5.0ms       5.0ms
interval     105.0ms     105.0ms     105.0ms     105.0ms
Pk delay         0us      22.0ms         0us        19us
Av delay         0us      12.0ms         0us         1us
Sp delay         0us       3.8ms         0us         1us
  pkts        305686     4248957           0      520011
way inds           0      504555           0           0
way miss           3      165303           0           7
way cols           0        4656           0           0
  bytes   1040146583 11540379317           0  1730046460
  drops           38      187176           0          87
  marks            0           0           0           0

We dont  have a good way to plot a test this extreme, and offloads do
hurt a lot. I turned off offloads to see what would happen:

root at nuc-client:~/git/iproute2-cake# tc -s qdisc show dev eth0
qdisc cake 8004: root refcnt 2 bandwidth 920Mbit diffserv4 flows
 Sent 3147074201 bytes 2948700 pkt (dropped 115035, overlimits 4207356
requeues 417)
 backlog 1592366b 1159p requeues 417
           Class 0     Class 1     Class 2     Class 3
  rate       920Mbit  862500Kbit     690Mbit     230Mbit
  target       5.0ms       5.0ms       5.0ms       5.0ms
interval     105.0ms     105.0ms     105.0ms     105.0ms
Pk delay         0us      26.2ms         0us         9us
Av delay         0us      12.2ms         0us         0us
Sp delay         0us       4.7ms         0us         0us
  pkts             0     3064884           0          10
way inds           0      456896           0           0
way miss           0      106191           0           2
way cols           0        1085           0           0
  bytes            0  3322825235           0        1186
  drops            0      115035           0           0
  marks            0           0           0           0


-- 
Dave Täht
Open Networking needs **Open Source Hardware**

https://plus.google.com/u/0/+EricRaymond/posts/JqxCe2pFr67