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doubt on UDP and TCP window size

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musicguy

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I would like for iperf it can set the TCP and UDP window size. So do the UDP window size is the correct term to use?

Is window size the same meaning as packet size
 

and it is not the same as packet size (although in some cases it can contain the same number of usable data bytes)
 

then what is the term to use when if i use for '-w' in the iperf command. example: 'iperf IP address -u -w128k ?
 

it sets the window size, not the packet size
 

-w option sets window size for TCP and buffer size for UDP. In general you will get better throughput with UDP with using bigger buffer size (bigger -w xxx size) assuming that your OS supports that.
 

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