Re: [ns] regarding trace file generated by flowmonitor

[Brian Lee Bowers <bowersb@lanl.gov>]

On Tuesday 07 August 2001 12:48, swetha swetha wrote:
> hi all
>
> Thanx kunchan Lan for replying to my mail.
>
> can u or some one please help me understand what each
> field  in the trace file represents. This is generated
> by the use of flowmonitor. It would be greatful if you
> could even give me the references as to where I can
> find the notes  related to it.
>
>  5.000 1 0 0 1 0 3 1312 656000 0 0 2368 1395200 0 0 68
> 47600 0 0
>
> 5.000 2 0 0 2 1 4 1056 739200 0 0 2368 1395200 0 0 68
> 47600 68 47600

ns Manual, Chapter 22, Section 22.7.

> I also have the problem in understanding the trace
> file in which i was trying to trace the congestion
> window parameter.
> 1.06644  1  0  4  0  cwnd_ 2.000
> 1.13288  1  0  4  0  cwnd_ 3.000
> 1.13618  1  0  4  0  cwnd_ 4.000
> 1.19933  1  0  4  0  cwnd_ 5.000
> 1.20262  1  0  4  0  cwnd_ 6.000
> 1.20592  1  0  4  0  cwnd_ 7.000
> 1.20921  1  0  4  0  cwnd_ 8.000
> 1.26577  1  0  4  0  cwnd_ 9.000
> 1.26906  1  0  4  0  cwnd_ 10.000
> 1.27236  1  0  4  0  cwnd_ 11.000
> 1.27565  1  0  4  0  cwnd_ 12.000
> 1.27895  1  0  4  0  cwnd_ 13.000
> 1.28224  1  0  4  0  cwnd_ 14.000
> 1.28553  1  0  4  0  cwnd_ 15.000
> 1.28883  1  0  4  0  cwnd_ 16.000
> 1.33221  1  0  4  0  cwnd_ 17.000
> 1.33551  1  0  4  0  cwnd_ 18.000
> 1.33880  1  0  4  0  cwnd_ 19.000
> 1.34209  1  0  4  0  cwnd_ 20.000
> 1.34539  1  0  4  0  cwnd_ 21.000
> 1.34868  1  0  4  0  cwnd_ 22.000

Looks like a time, some additional parameters (you'll have to tell me 
what the 1 0 4 0 stands for) and a congestion window.  The congestion 
window is following a classic slow start increase, increasing by 1 
each time an ACK is received.  Looks like you have a link delay of 
roughly 66 ms (1.13288 - 1.06644 ==> .06644).

What more do you want to know?  What are you printing out here in 
your trace?  Just saying "I don't understand my trace" is not a real 
question - tell us what you don't understand about your trace.

-- 
Brian Lee Bowers	|	RADIANT Team (Summer Intern)
bowersb@lanl.gov	|	Los Alamos National Laboratory