[bwm-tools-tech] configure bwmd (firewall.xml)

[Andriy T. Y. <wir...@wi...>]

Hallo.

I can't complete understand all options for traffic flows.

Assume I what shape incomming and outgoing traffic for web (tcp port 80).
I dont start bwm_firewall  just do it by hand:

iptables -t mangle -F
iptables -t mangle -A INPUT  -i eth0 -p tcp  --sport 80 -j MARK --set-mark 1001
iptables -t mangle -A OUTPUT -o eth0 -p tcp  --dport 80 -j MARK --set-mark 1002

iptables -t filter -F
iptables -t filter -A INPUT  -i eth0 -m mark --mark 1001 -j QUEUE
iptables -t filter -A OUTPUT -o eth0 -m mark --mark 1002 -j QUEUE


Look at part of firewall.xml that use bwmd:

 <traffic>
	<flow name="mainline" stats-len="10" queue-size="262144" queue-len="300" max-rate="65536" burst-rate="131072" counter-timeout="60">
		<flow name="1_client_in" max-rate="8192" flow-id="1001">
			c_traffic_in;
		</flow>
		<flow name="1_client_out" max-rate="8192" flow-id="1002">
			c_traffic_out;
		</flow>
	</flow>
</traffic>

For example I what shape incomming traffic (  name="1_client_in" ) to 10240 bytes per sec (10KB/sec)
and outgoing traffic (  name="1_client_out" ) to 1024  bytes per sec (1KB/sec).

Which values for parameters 

stats-len
queue-size
queue-len
max-rate
burst-rate
counter-timeout

 in this case?


I tried to set some parameters but when downloading big file (~20 Mb) I got  NOT fluent flow  and not stable speed (with jumps).
( When I shape trafic with kernel QoS download flow approximally  equal to rate that I set to qdisc and flow was fluent. )

What  are relationships  between parameters?

And more : What  is  CONCEPTION  of shaping?

-- 
Andriy T. Yanko
wir...@wi...

*   Avoid The Gates of Hell use Linux
**  Wenn ich sterbe, legt mir eine Birne in mein Grab ...