[ns] monitoring Q size

[Ishan Mandrekar <ishan@io.ece.drexel.edu>]

Had sent this yesterday evening, but didn't generate any responses...
probably every1 must have left by the time it arrived. Hence re-sending.
For those who have already read it but cannot help, please ignore it and
sorry for the trouble.

-Ishan.

---------- Forwarded message ----------
Date: Mon, 10 Apr 2000 18:52:20 -0400 (EDT)
From: Ishan Mandrekar <ishan@io.ece.drexel.edu>
To: ns-users@mash.cs.berkeley.edu
Subject: monitoring Q size

Dear NS-users:

I'm looking to monitor the instantaneous queue size, and I have the
following coded to achieve the same:

set q1 [$ns monitor-queue $n3 $n4 1 0.1]
set qlen [$q1 set size_]
puts $qlen

I've put the above lines in a procedure, which is called recursively after
a specific time interval all through the simulation period. Even though I
can see the queue overflowing in NAM, the value for $qlen printed on the
screen is zero throughout.

Am I missing something here?

Thanks,
-Ishan.