pi@raspberrypi:~/netio $ ./netio -t 192.168.30.1

NETIO - Network Throughput Benchmark, Version 1.34
(C) 1997-2018 Kai Uwe Rommel

TCP connection established.
Packet size  1k bytes:  3961.83 KByte/s Tx,  7666.56 KByte/s Rx.
Packet size  2k bytes:  4252.33 KByte/s Tx,  8158.39 KByte/s Rx.
Packet size  4k bytes:  4252.64 KByte/s Tx,  8458.30 KByte/s Rx.
Packet size  8k bytes:  4206.67 KByte/s Tx,  8955.09 KByte/s Rx.
Packet size 16k bytes:  4201.98 KByte/s Tx,  8853.79 KByte/s Rx.
Packet size 32k bytes:  4163.85 KByte/s Tx,  9422.16 KByte/s Rx.
Done.