[Cerowrt-devel] performance numbers from WRT1200AC (Re: Latest build test - new sqm-scripts seem to work; "cake overhead 40" didn't)

[Mikael Abrahamsson]

On Sun, 28 Jun 2015, Sebastian Moeller wrote:

After the modification, the installed policy looks better, I am now not 
getting any drops in iperf3 (=ECN is working). Please see link to test 
results. From my bw monitoring script, it looks like I am receiving more 
than 500 megabit/s though, even though sending is spot on at 500 
megabit/s. Yeah, the receiving limiter isn't working at all, I see now in 
rrul_be that I am getting full gige speed download.

root at OpenWrt:~# tc -d qdisc
qdisc cake 8005: dev eth0 root refcnt 9 bandwidth 500Mbit diffserv4 flows 
raw
  linklayer ethernet overhead 42
qdisc ingress ffff: dev eth0 parent ffff:fff1 ----------------
qdisc mq 0: dev eth1 root
qdisc fq_codel 0: dev eth1 parent :1 limit 1024p flows 1024 quantum 300 
target 5.0ms interval 100.0ms ecn
qdisc fq_codel 0: dev eth1 parent :2 limit 1024p flows 1024 quantum 300 
target 5.0ms interval 100.0ms ecn
qdisc fq_codel 0: dev eth1 parent :3 limit 1024p flows 1024 quantum 300 
target 5.0ms interval 100.0ms ecn
qdisc fq_codel 0: dev eth1 parent :4 limit 1024p flows 1024 quantum 300 
target 5.0ms interval 100.0ms ecn
qdisc fq_codel 0: dev eth1 parent :5 limit 1024p flows 1024 quantum 300 
target 5.0ms interval 100.0ms ecn
qdisc fq_codel 0: dev eth1 parent :6 limit 1024p flows 1024 quantum 300 
target 5.0ms interval 100.0ms ecn
qdisc fq_codel 0: dev eth1 parent :7 limit 1024p flows 1024 quantum 300 
target 5.0ms interval 100.0ms ecn
qdisc fq_codel 0: dev eth1 parent :8 limit 1024p flows 1024 quantum 300 
target 5.0ms interval 100.0ms ecn
qdisc fq_codel 0: dev ifb4eth0 root refcnt 2 limit 1024p flows 1024 
quantum 300 target 5.0ms interval 100.0ms ecn
root at OpenWrt:~# tc -d class show dev eth0
class cake 8005:6 parent 8005:
class cake 8005:44b parent 8005:
class cake 8005:50c parent 8005:
class cake 8005:5fc parent 8005:
class cake 8005:716 parent 8005:
class cake 8005:7b3 parent 8005:
class cake 8005:b43 parent 8005:
class cake 8005:c7f parent 8005:
class cake 8005:c87 parent 8005:
class cake 8005:d8d parent 8005:
root at OpenWrt:~# tc -d class show dev ifb4eth0
class fq_codel :32c parent none

I have put the results at http://swm.pp.se/aqm/rrul_150629-cake-1.tar

I also have a small shell script that prints out pps and bw once per 
second that I run on my ubuntu machine, just to see approx how much 
traffic is being used. Might be useful for someone.

http://swm.pp.se/aqm/measurebw.sh

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