Having introduced Iperf and Jperf, as well as covering details on TCP throughput tests by adjusting Window Size values, it's time to complete this series with comments on adjusting MSS and Buffer Length values. I'm also going to touch on using the results of Jperf testing to make changes to a PC to improve network performance.

Free and openly available, Iperf is a command line tool useful for measuring network performance. In my last post, I introduced some basic command line instructions to run Iperf between two endpoints and showed how the tool can be used to generate and measure both TCP and UDP performance. This time, I'll discuss Iperf's graphical cousin: Jperf.

One of the cool things about networks is there are many free tools to work with if you know where to look and how to use them. I've looked at a couple free network tools on this blog so far, including Wireshark and NetMeter. This time, I'm going to take a look at another network tool known as Iperf, a network performance tool used for measuring the bandwidth and the performance of TCP and UDP data flows between two endpoints.