On Sun, May 14, 2017 at 11:55:52AM +0200, Baptiste Jonglez wrote: > On Sun, May 14, 2017 at 12:52:11AM +0200, Jason A. Donenfeld wrote: > > One small and unfortunate thought just occurred to me: the backporting > > to really old kernels I'm pretty sure is way less efficient than newer > > kernels on the RX, due to some missing core fast-path APIs in the old > > kernels. In particular, I had to wrap the UDP layer with some nasty > > hacks to get packets out, whereas newer kernels have an elegant API > > for that which integrates in the right place. Just a thought... I > > haven't actually done concrete measurements though. > > Good idea, I have redone the same setup with kernel 4.9.18 from > jessie-backports. > > TL;DR: when switching from kernel 3.16 to 4.9, wireguard has a 50% > performance gain in the most favourable case (large MTU). Also, iperf > seems generally faster than iperf3, most likely because iperf3 has no > multi-threading.
4.9 is 6 months old, I'd be curious if 4.11 is any faster given the rate of change in the network stack :) thanks, greg k-h _______________________________________________ WireGuard mailing list WireGuard@lists.zx2c4.com https://lists.zx2c4.com/mailman/listinfo/wireguard