traffic bandwidth limit with dummynet

[napTu 3aH]

>thank you luigi,
>your explanation really cleared everything out for me.
>i changed my pipe 1 config to:
>ipfw pipe 1 config bw 800Mbits/s queue 200K
>and set HZ to 4000
>and this solved my problem completely.
>i checked limitations with various values between 400Mbits/s to more than 1000Mbits/s and it works like a charm.
>(the problem was when i set queue to 80MBytes, queue value was actually set to "80 slots")

>thanks again luigi.


please look at PR on near problem with dummynet : http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/147245 .

Here  maximum shaping speed is limited to 11.999Mbit/s with HZ=1000 and net.inet.ip.dummynet.io_fast:1, higher values do not shape traffic anymore.

Second problem, when pipe not worked correctly,  downloading traffic to one ip,port from multiple sources.

With HZ=2000,  maximum shaping speed is limited on 23.999Mbit/s