[altq:1891] Re: CBQ: small pakets are too limited !

[Kenjiro Cho <kjc@csl.sony.co.jp>]

Emmanuel Duros wrote:
> I have a router based on FreeBSD 4.4R with altq-3.0.
> 
> My router is dedicated to route udp traffic that is shaped with altq. My
> problem is that I have not been able to shape correctly udp traffic
> composed of small packets (e.g. 50 to 500 byte-long). The outgoing
> traffic is significantly below the bandwidth set in altq.conf.
> 
> However, when I increase the packet size, I can reach the correct
> bandwidth.

This indicates that the CPU is saturated.
It might help to increase the minburst and the maxburst parameters to
process more packets at a time. 

-Kenjiro