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by skarap
3129 days ago
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`ip link set qlen 1000 dev tun0` (so it matches the eth0 queue, instead of being an order of magnitude smaller) on both ends of the tunnel, and you get 90% of direct connection speed from openvpn: $ iperf3 -c 10.1.0.2
Connecting to host 10.1.0.2, port 5201
[ 4] local 10.1.0.1 port 38274 connected to 10.1.0.2 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-1.00 sec 3.12 MBytes 26.1 Mbits/sec 0 802 KBytes
[ 4] 1.00-2.00 sec 22.3 MBytes 187 Mbits/sec 0 2.24 MBytes
[ 4] 2.00-3.00 sec 21.4 MBytes 179 Mbits/sec 0 2.45 MBytes
[ 4] 3.00-4.00 sec 23.3 MBytes 196 Mbits/sec 0 2.39 MBytes
[ 4] 4.00-5.00 sec 23.4 MBytes 196 Mbits/sec 0 2.58 MBytes
[ 4] 5.00-6.00 sec 21.5 MBytes 180 Mbits/sec 0 2.70 MBytes
[ 4] 6.00-7.00 sec 23.5 MBytes 197 Mbits/sec 0 2.68 MBytes
[ 4] 7.00-8.00 sec 22.6 MBytes 189 Mbits/sec 0 2.78 MBytes
[ 4] 8.00-9.00 sec 22.4 MBytes 188 Mbits/sec 0 2.45 MBytes
[ 4] 9.00-10.00 sec 23.5 MBytes 197 Mbits/sec 0 2.69 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 207 MBytes 174 Mbits/sec 0 sender
[ 4] 0.00-10.00 sec 207 MBytes 174 Mbits/sec receiver
iperf Done.
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