[LARTC] HTB - not borrowing, not exceeding rate

[Andy Furniss]

Kajetan Staszkiewicz wrote:

> Here is current setup:
> 
> tc qdisc del root dev eth2.24 2>/dev/null
> tc qdisc add root dev eth2.24 handle 1: htb default 1
> 
> # main rate limitation for whole connection (802.11a radio link)
> tc class add dev eth2.24 parent 1: classid 1:1 htb rate 15000kbit ceil 
> 15000kbit burst 10kbit

Burst too small - it's realated to HZ and also should be at least as big 
as child bursts.

http://luxik.cdi.cz/~devik/qos/htb/manual/userg.htm#burst


> 
> # class for internet connections - this one can use nearly whole link
> tc class add dev eth2.24 parent 1:1 classid 1:6667 htb rate 12000kbit ceil 
> 13500kbit burst 100kbit
> 
> # class for in-network p2p connections - this one has lower guaranteed rate
> tc class add dev eth2.24 parent 1:1 classid 1:6666 htb rate 3000kbit ceil 
> 14000kbit burst 10kbit
> tc qdisc add dev eth2.24 parent 1:6666 handle 6666: sfq perturb 5 quantum 
> 1500b

I would condider using htb prio here and sfq peturb causes packet 
reordering so 5 is a bit low. SFQ is really best for bulk traffic.


> # now in-network p2p traffic. if it comes from other LANs then direct it to
> # 1:6666
> tc filter add dev eth2.24 protocol ip parent 1:0 u32 match ip src 
> 192.168.5.0/24 flowid 1:6666
> tc filter add dev eth2.24 protocol ip parent 1:0 u32 match ip src 
> 192.168.4.0/24 flowid 1:6666

I think these should be before the other filters.

Andy.