There is a systemd service hosting iperf3 for users to test the network speeds.
$ iperf3 -c iperf3.zfs.rent Connecting to host iperf3.zfs.rent, port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 106 MBytes 891 Mbits/sec 0 3.05 MBytes [ 5] 1.00-2.00 sec 110 MBytes 921 Mbits/sec 0 3.05 MBytes [ 5] 2.00-3.00 sec 109 MBytes 911 Mbits/sec 0 3.05 MBytes [ 5] 3.00-4.00 sec 110 MBytes 920 Mbits/sec 0 3.05 MBytes [ 5] 4.00-5.00 sec 107 MBytes 899 Mbits/sec 3 2.19 MBytes [ 5] 5.00-6.00 sec 109 MBytes 918 Mbits/sec 37 1.16 MBytes [ 5] 6.00-7.00 sec 106 MBytes 887 Mbits/sec 168 889 KBytes [ 5] 7.00-8.00 sec 108 MBytes 909 Mbits/sec 0 977 KBytes [ 5] 8.00-9.00 sec 108 MBytes 910 Mbits/sec 0 1.03 MBytes [ 5] 9.00-10.00 sec 97.1 MBytes 815 Mbits/sec 108 571 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.05 GBytes 898 Mbits/sec 316 sender [ 5] 0.00-10.01 sec 1.04 GBytes 896 Mbits/sec receiver
Caveats: