Hi Samer, I agree that Tracegraph could not provide us with the output we desire. But anyways, how can i base that my scripts were correct. As for that matter, could you share how you perform your post-analysis for new wireless format.
Your help will be much appreciated. Thanks On 2/24/07, Samer Bali <[EMAIL PROTECTED]> wrote: > > > hi all, > I used Tracegraph to analyse trace file of ns-2. I found that it works > good > when there is no frequent packet drops and retransmission. In a simulation > where a large packet drops and retransmission exist (for example in my > case > I used the shadowing model in the PHY layer and used a multihop scenario > with up to 4 hops) Tracegraph fails to give a correct analysis results. I > think that Tracegraph CANNOT BE TRUSTED in all simulation scenarios. One > should check his results using another tool (do some sample checks with > awk > or perl or grep command). > Yours, > Samer > > ----- Original Message ----- > From: "Old Maven" <[EMAIL PROTECTED]> > To: <ns-users@ISI.EDU> > Sent: Saturday, February 24, 2007 7:29 PM > Subject: Re: [ns] ns2 post-analysis of the trace files > > > > > > I used ns2 simulator to create trace files in two formats from tdma > > simulation. > > > > 1) old wireless format > > 2) new wireless format > > > > I usually feed this to "tracegraph" to get my results and plot them. I > > have > > been looking for custom AWK/PERL scripts to write those analysis myself. > > > > In the old wireless format , with some simple counts and pattern > matching, > > i > > can find the generated packets, dropped packets and bytes, forwarded > > packets > > and bytes. But sent packets: i couldnt find anyway that matches with the > > output from the tracegraph file. > > > > And when i run the same scripts for the new wireless format .. [ i mean > > the > > idea same with counts ] , most of the parameters differ. Basically, i > have > > to come up with scripts to calculate average delay, variation in delays > > (or > > jitter), throughput in bits per seconds, packets > > generated/sent/forwarded/dropped. > > > > > > Is there any available scripts already, or any documentation that can > lead > > me to find the exact definition of how to calculate these.[ in the new > > wireless format ]. > > > > I tried this link > > http://mailman.isi.edu/pipermail/ns-users/2004-September/044669.htmlfrom > > the archives, but no luck. > > > > Thanks > >
