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Re: Question on Queue class

> However, I do not understand according to what a virtual queue can deque
> a packet, as
> the target of the virtual queue is the FQ queue.
> 

Please take a look in the method Packet* FQ::deque() (fq.cc). When the
FQ selects a packet from a virtual queue, it calls the handler of the
corresponding virtual queue, which in turn invokes method Queue::deque()
of this queue.

> My corrolary question is, if the virtual queues deque packets faster
> than the FQ queue,
> the FQ queue must bufferized packet. Therefore the number of packets in
> the system is
> higher than (Queue set limit_)*(number of flowid).
> 

This cannot happen since the virtual queue can only send a packet to FQ
if its Head-of-Line hol_=0.

Cheers

-- 
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    Nguyen Huu Thanh                      

    Universitaet der Bundeswehr Muenchen  
    Institut fuer informationstechnische Systeme
    Werner-Heisenberg-Weg 39
    85577 Neubiberg                        
    Tel.: +49 89 6004-2279                   
    Email: [email protected]  
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