Re: [ns] how to know the exact current number of packets in each queue in one node

[Huan Pham <huan@cs.jcu.edu.au>]

Have you tried investigating the Trace file?

It's possible to get actuall queue size at any time from Trace file.

I think the fomula is:
    Present Queue Size  =  Previous Queue Size + Enqueue - Dequeue

Where:

Enqueue = Total Number of packets (or bytes) received and enqueued from Last time interval
Dequeue = Total Number of packets (or bytes) have been dequeued for transmission

To get different queue size for different virtual queue ( WFQ) is just a matter of taking flow ID into account.

I think that should not be a very difficult talk. Send me your code to see if I can help.


liu yong wrote:

> Hi all,
>       There are several queues in one node for scheduling(WFQ) in my simulation topology.How can I know the exact current number of packets in each queue?
>       Thanks your helps in advance.
> Rgds,
> liu yong
>
>
>             engp1130@nus.edu.sg