TCP and UDP window size?

[Lee L. <lee...@nt...>]

Hello every one,

I have a question, I am reading through the user documentation for IPERF and wanted some clarification.

I am typically using Iperf to measure available true bandwidth through switching products at 100mbps, now I want to understand what the best packet window size would be for such a test, so far I have just assume a window size of 128K....
I see there is an equation in the documentation for calculating this but do you really need to be this specific, am I getting the correct results sticking with a 128k packet window ?

Thank you for your feedback.

Lee