Hi Guys, Good Morning
I am trying to visualize cwnd plot in gnuplot in obuntu 10.04. I want to see
the sawtooth display in time(x-axis) and packet (y-axis) but instead I am
getting a different waveform. Can some body modify it according to sawtooth
waveform. I shall be grateful. Below is my code:
set ns [new Simulator]
$ns color 1 Green
set tracefile1 [open out.tr w]
set winfile [open WinFile w]
$ns trace-all $tracefile1
set gio [open out.nam w]
$ns namtrace-all $gio
proc finish {} {
global ns tracefile1 gio
$ns flush-trace
close $tracefile1
close $gio
exec nam out.nam &
exit 0
}
set n0 [$ns node]
set n1 [$ns node]
$ns duplex-link $n0 $n1 0.2Mb 500ms DropTail
$ns duplex-link-op $n0 $n1 orient right
set tcp [new Agent/TCP/Reno]
$ns attach-agent $n0 $tcp
$tcp set fid_ 1
set tcpsink [new Agent/TCPSink]
$ns attach-agent $n1 $tcpsink
$ns connect $tcp $tcpsink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
proc plotWindow {tcpsource file } {
global ns
set now [$ns now]
set time 0.01
set cwnd [$tcpsource set cwnd_]
puts $file "$now $cwnd"
$ns at [expr $now+$time] "plotWindow $tcpsource $file"
}
$ns at 0.01 "plotWindow $tcp $winfile"
$ns at 0.0 "$ftp start"
$ns at 5.0 "$ftp stop"
$ns at 5.5 "finish"
$ns run
