Re: tc and priority

[Fabio Marcone <fabio.marcone@duet.it>]

Hi!

>> With your script I get the same result as mine: 2 parallel connections 
>> (with different priority), one uses all bandwitdh and the other stalls 
>> alternatively.
>>
>> perhaps there is a timeout mechanims that forse sending queued packets 
>> although lower priority?
>>     
>
> This is exactly how PRIO works. Higher priority classes get dequeued
> first, so if there is something to dequeue forever then the lower
> priority classes would never dequeue.
>
>   
but it's not behaviour shown by test. And I don't no why. 
Ex.
connection A -> higher priority
connection B -> lower priority

results:
time      | connection A | connection B
1 sec           32 KB/s             0 KB/s
10 sec         18 KB/s           15 KB/s
20 sec           2 KB/s           31 KB/s
30 sec           0 KB/s           32 KB/s
40 sec         15 KB/s           16 KB/s
50 sec         25 KB/s             7 KB/s
60 sec         33 KB/s             0 KB/s
    ...                 ....                    ....
and so on

do you understand? I don't know why...

suggestions are welcome.

Fabio