Ns2.34 :XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
 

when I run the script on ns2.34
pls see attachment.

Xgraph is plotted. But I get this message

$XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
after 195 requests (193 known processed) with 0 events remaining.

what is the reason

I guess you mean example4.tcl.txt :
I.e. do not remove the .tcl suffix from tcl files when attached.

That's the result of forcing a shutdown of the Xgraph GUI.
Not an error, but a "message".

Avoiding the "$XIO message":
Use the 'Close' button in the upper left corner of "Xgraph".

-

Thanks Kundfi.

Actually when I was uploading tcl file. It did not uploaded. So I have to change it to txt file :)

# 3.

It is nice when an attached file type can be recognized,
then you will not have to guess what it is about.

So no change to .txt please, but add .txt : example4.tcl.txt .

ok sir