Hi, I can't explain the information below, but hopefully someone a whole bunch smarter than me understands it - as it seems to help with TCP throughput in OpenVPN (the holy grail??? ... :-)).
I have added some plots and details to an open OpenVPN ticket, located here ... https://community.openvpn.net/openvpn/ticket/2. And, here is the explanation to go with it, ============================================================ Here are some results, between two machines in my network. The results noted as "direct" are exactly that - a link between the two machines, without OpenVPN running. The "OpenVPN" results are then of course with OpenVPN running (between the same two machines, but traffic over OpenVPN). Note the significant impact that the TCP Window size has on OpenVPN performance ... any thoughts? ============================================================ As above, does anyone understand the huge (5-10x or more) impact TCP Window Size has on OpenVPN throughput? And perhaps more relevant - how do we use this to improve TCP throughput in OpenVPN? Thanks! ... Russell
