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[ns] Flowmonitor Trace - missing data
Hello, I use flowmonitor to gather information about flows. The monitor has
been initiated this way:
set flow_stat [open flow.stat w]
set flowmon_ [$ns makeflowmon Fid]
$ns attach-fmon [$ns link $receiver $final_receiver] $flowmon_ 0
set_flowMonitor $flowmon_ $flow_stat
proc set_flowMonitor {flowmon output_chan} {
$flowmon attach $output_chan
return $flowmon
}
Thereafter I dump the flowinfo once every 0.1 seconds using the follwing
piece of code:
proc dump_flow_info {} {
global ns flowmon_
$flowmon_ dump
$ns after 0.1 "dump_flow_info"
}
Looking in my trace file flow.stat I have lines looking like this:
1.000 1 0 2 1 0 6 qd qd 156 0 qd qd 156000 0 0 0 341 0
1.000 2 0 2 2 1 6 qd qd 159 0 qd qd 159000 0 0 0 341 0
1.000 3 0 2 3 2 6 qd qd 26 0 qd qd 26000 0 0 0 341 0
Some of the columns doesn't have proper values but instead are marked
"qd". Does anybody have any clue why this is happening?
I get the same sort of result if I run the test file
test-suite-simple.tcl, suggesting that maybe I am not doing anything
wrong?? test-suite-simple.tcl plots the following information to the
screen:
koltrast$ ns test-suite-simple.tcl stats
...
...
tcp 0 total_packets_acked 335
tcp 1 total_packets_acked 87
fid: 0 per-link total_drops 13
fid: 0 per-link total_packets qd
fid: 0 per-link total_bytes qd
fid: 1 per-link total_drops 6
fid: 1 per-link total_packets qd
fid: 1 per-link total_bytes qd
aggregate per-link total_drops 19
aggregate per-link total_packets qd
Any suggestions would be greatly appreciated!
Regards, Jorgen
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