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Re: [ns] random variables Vs simulation time
Do you have many upcalls to tcl?
Tarik Alj <[email protected]> writes:
> 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