Re: [ns] random variables Vs simulation time

[Tarik Alj <aljtarik@ozias.inrs-telecom.uquebec.ca>]

Yes, I was using uniform random variables with the min_ and max_ set to coherent 
values. Plus I was getting the "scheduler going backward in time" message. I was 
using scheduler.cc v1.42, after I changed to scheduler.cc v1.46 the problem 
disappeared but the simulation kept taking forever to complete.

> 
> Did you check your random packet size? Some ranvars may generate huge
> packets. Just a guess.
> 
> - Haobo
> 
> On Thu, 16 Mar 2000, Tarik Alj wrote:
> 
> > Hi everybody,
> > 
> > 	in my scripts I have been using a proc that uses 2 random variables to 
> > set random packet sizes and rate for cbr sources. About 20 CBR sources are 
> > generated like this, the topology is fairly small (5 nodes), and the 
simulation 
> > time is 3000 seconds.
> > 	It takes about 2 hours to complete, Vs a few minutes without using 
> > random variables. Has anybody experienced the same kind of behaviour? Does 
it 
> > have anything to do with the scheduler? 
> > 	
> > 	Answers, suggestions, pointers would be greatly appreciated.
> > 	
> > 	Thanks,
> > 
> > 
> > Tarik
> > 
> > 
> > 

Tarik