dummynet dropping too many packets

[Julian Elischer]

Luigi Rizzo wrote:

>> Taildrop does not really help with this. GRED does much better.
> 
> i think the first problem here is figure out _why_ we have
> the drops, as the original poster said that queues are configured
> with a very large amount of buffer (and i think there is a
> misconfiguration somewhere because the mbuf stats do not make
> sense)

it all depends on the characteristics of the traffic

you need different queue lengths if it is just a small number of high 
speeed sessions (and mayne a large number of slow speed sessions),
or if it is a larger number of medium speed sessions.

Is it possible to know what sessions are losing packets?