[Openvpn-devel] Wintun performance results

Lev Stipakov lstipakov at gmail.com
Fri Jun 14 17:56:56 CEST 2019


I got some new Wintun (I used version 0.2) performance stats I would like
to share. I have tested openvpn2 and openvpn3 (both with openssl) on the
client against openvpn2 and proprietary openvpn3 server (which is openvpn3
with kernel acceleration). Cipher AES-256-GCM.

Server - proprietary openvpn3

ovpn3 wintun   1.90 Gbit/s
ovpn3 tap6       890 Mbit/s

ovpn2 wintun    870 Mbit/s
ovpn2 tap6       440 Mbit/s

Server - open source openvpn2

ovpn3 wintun    670 Mbit/s
ovpn3 tap6       580 Mbit/s

ovpn2 wintun    610 Mbit/s
ovpn2 tap6        450 Mbit/s

As you see, in every case Wintun overperforms tap-windows6 and approaches
mind boggling 2 Gbit/s.

My openvpn2 wintun patch could be found here
https://github.com/lstipakov/openvpn/tree/feature/wintun, and openvpn3 -

Jason / Simon - great work on Wintun!

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