Hi k, I'll look into this. Which snapshot are you using? Or, which commit is this?
Jason On Fri, Nov 4, 2016 at 5:01 PM, <[email protected]> wrote: > I'm trying to connect 2 endpoints with wireguard. > One endpoint has MTU of inet inteface 1500, another 1456. > To prevent packet fragmentation on inet interface i set up mtu 1383 for both > wg interfaces. Checked that no frag occurs on inet interface in wireshark. > Maximum packet data size is 1383-28 = 1355. Checked with no-fragment ping, > packets pass well. > > First I checked packet loss between inet IPs > > iperf -c x.x.x.x -u -b 25M -l 1400 > 0.0-10.3 sec 29.6 MBytes 24.2 Mbits/sec 16.073 ms 175/23090 (0.76%) > > packet loss always within 0.5..1%. its normal > now I try to do the same with much less bandwidth between wireguard ips > on packet size <=1252 packet loss rate is 0.5..1% > > iperf -c 192.168.254.65 -w 500000 -u -b 1M -l 1252 > 0.0-10.0 sec 1.18 MBytes 991 Kbits/sec 0.659 ms 9/ 1000 (0.9%) > > but starting from packet size 1253 packets loss greatly increases. its 6..10% > > iperf -c 192.168.254.65 -w 500000 -u -b 1M -l 1253 > 0.0-10.0 sec 1.12 MBytes 936 Kbits/sec 0.328 ms 64/ 998 (6.4%) > > Thats why TCP is incredibly slow. If I set up mss for TCP to not exceed > packets size threshold TCP is fast. > > _______________________________________________ > WireGuard mailing list > [email protected] > http://lists.zx2c4.com/mailman/listinfo/wireguard _______________________________________________ WireGuard mailing list [email protected] http://lists.zx2c4.com/mailman/listinfo/wireguard
