Re: [ns] Queue monitoring in a lan

[Alefiya Hussain <alefiyah@catarina.usc.edu>]

hi,

you can use 
Scheduler::instance.clock()

this will return the current virtual time of the simulator.

-alefiya



On Mon, 18 Sep 2000, Neeraj - Khandelwal wrote:

> 
> hi again,
> excuse the naive question, being new to ns doesnt help.
>   how can I record the simulation time from inside the mac_802_3.cc file
> before a particular event? can  I straightaway get a handle to the timer
> (how) and use some of its method?
> 
> thanks
> Neeraj
> 
> 
> On Sun, 17 Sep 2000, Alefiya Hussain wrote:
> 
> > 
> > If i understand correctly what you want to measure is the time spent by
> > the packet at the mac layer. 
> > 
> > If you dont want to generate tracefiles what you could do is
> > insert some code in the mac-802_3.cc file. 
> > Record when the mac layers sends it down and when it enters the resume
> > function defined in the mac_802_3.cc file. 
> > 
> > The difference between the two will give you the time spent at the mac
> > layer
> > 
> > -alefiya
> > 
> > On Sun, 17 Sep 2000, Neeraj - Khandelwal wrote:
> > 
> > > 
> > > that was what I was going to do initially. then I thought of automating it
> > > using some object, as the file runs into megabytes with lots of nodes
> > > around. guess will have to write a script to do that .. ( which I am not
> > > vwery good at :-(
> > > 
> > > Neeraj
> > > 
> > > 
> > > 
> > > 
> > > On Sun, 17 Sep 2000, Lloyd Wood wrote:
> > > 
> > > > On Sun, 17 Sep 2000, Neeraj - Khandelwal wrote:
> > > > 
> > > > > yes, but what I want to measure is the queue delays for each packet, ie
> > > > > the difference in time of enqueing and dequeing and not the queue size in
> > > > > packets.
> > > > 
> > > > that's going to be in the tracefile. Just compare + and - events.
> > > > 
> > > > L.
> > > > 
> > > > <L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>
> > > > 
> > > > 
> > > 
> > 
> > 
> > 
>