[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:

> Hi Mikael,

root at OpenWrt:~# tc -d qdisc
qdisc htb 1: dev eth0 root refcnt 9 r2q 10 default 12 direct_packets_stat 
0 ver 3.17 direct_qlen 532
qdisc fq_codel 110: dev eth0 parent 1:11 limit 1001p flows 1024 quantum 
300 target 5.0ms interval 100.0ms ecn
qdisc fq_codel 120: dev eth0 parent 1:12 limit 1001p flows 1024 quantum 
300 target 5.0ms interval 100.0ms ecn
qdisc fq_codel 130: dev eth0 parent 1:13 limit 1001p flows 1024 quantum 
300 target 5.0ms interval 100.0ms ecn
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 htb 1: dev ifb4eth0 root refcnt 2 r2q 10 default 12 
direct_packets_stat 0 ver 3.17 direct_qlen 32
qdisc fq_codel 110: dev ifb4eth0 parent 1:11 limit 1001p flows 1024 
quantum 500 target 5.0ms interval 100.0ms ecn
qdisc fq_codel 120: dev ifb4eth0 parent 1:12 limit 1001p flows 1024 
quantum 1500 target 5.0ms interval 100.0ms ecn
qdisc fq_codel 130: dev ifb4eth0 parent 1:13 limit 1001p flows 1024 
quantum 300 target 5.0ms interval 100.0ms ecn

then I change to cake and add 42 as overhead:

root at OpenWrt:~# tc -d qdisc
qdisc cake 8003: 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 8003:508 parent 8003:
class cake 8003:944 parent 8003:
root at OpenWrt:~# tc -d class show dev ifb4eth0
root at OpenWrt:~#

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