Tcpbench /
Measuring network speeds with tcpbench
tcpbench(1) is a helpful utility to help benchmark networking speeds. To use tcpbench, you will need two machines with the tcpbench utility installed (tcpbench is provided by default on OpenBSD). One machine will act as the client, and the other as the server. The server will need a publicly routable IP address.
On the server, we run:
server$ tcpbench -s -p 12345
-p 12345
specifies the port of 12345. Make sure the
firewall? accepts incoming connections from the client to port
12345.
On the client
client$ tcpbench -p 12345 server.example.com
Replace server.example.com
with the server's hostname or its IP address.