Possible Duplicate:
How to test real network throughput between two points?
Given two computers connected by some network interface, is there a standard tool used by an academics publishing in peer-reviewed journals to benchmark performance across that interface?
To use iperf first start it in server mode at one end:
iperf -s
Next, run it in client mode at the other end, specifying the IP address of the server node:
iperf -c xxx.xxx.xxx.xxx -d
Test run netperf, Nettest or TTCP. not sure of the industry standard status thou.
Offtopic: new users aren't allowed to add hyperlinks?
