Hi Bruce, thank you very much for your help. Regards Sandro Il 23/Nov/2016 18:12, "Bruce A. Mah" <b...@es.net> ha scritto:
> If memory serves me right, Sandro Bureca wrote: > > > could you please explain the meaning of the optional argument *-w* > > when iperf3 is used to measure bandwidth with *udp *packets. > > > > I assumed it was used for *TCP-window* parameters but I found on some > > iperf3 help that it is used for dimensioning the *buffer*. It is not > > very clear to me. > > It helps a little if you read the code (see src/iperf_tcp.c), but > basically what's happening is that the option sets the sender and > receiver socket buffer sizes. These have the side effect of setting the > TCP window size. > > For UDP, there's no window size of course. But it's still useful to set > the socket buffer size. This can be helpful for avoiding UDP packet > losses. > > I admit that the option is a bit misnamed. > > Bruce. > > >
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