I want to measure channel for the case of thousands parallel clients operating through it. I want to find out is there any degradation of throughput in this case. On client side I use
iperf -c 'myhost.com' -P 2000
The results are presented by the huge list of measured channels:
 0.0-10.3 sec 3.48 MBytes 2.84 Mbits/sec
My question is: how can I measure average transfer rate in my channel for parallel clients without doing the averaging by myself, and may be is there some command I can use to estimate degradation of channel for multiple parallel clients case?