Re: [ns] Reducing Tracefile size..

[Lloyd Wood <l.wood@eim.surrey.ac.uk>]

On Mon, 18 Jun 2001, Sheetalkumar Doshi wrote:

> I'm running a few simulations  of a wireless ad hoc network over a time of 1500
> secs simulation time and I'm getting a huge size of  the .tr file in the
> process( around 50 MB or so..)

tiny.

> I have turned mactrace option ON bcos i need the information on
> the mac level for my analysis. Are there any ways to cut down the
> size of the tracefile? Can i direct the tracefile output to a pipe
> instead of a file by setting some options in the simulation tcl
> file? Or are there any other methods that ppl use to solve this
> size problem?

pipe to a filter; pipe to gzip; pipe to both. Will slow sims down,
though.

   set outputfortrace blah
   set outputfornam blah2
   set f [open "|gzip -c > $outputfortrace.tr.gz" w]
   set nf [open "| gzip -c > $outputfornam.nam.gz" w]

or whatever.

L.

<L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>