我在两个终端之间执行 iperf 并能够获得如下输出：
2017-01-09 16:43:03: Connecting to host 192.168.234.2, port 5201
2017-01-09 16:43:03: [ 4] local 192.168.234.1 port 36544 connected to 192.168.234.2 port 5201
2017-01-09 16:43:03: [ ID] Interval Transfer Bandwidth Retr Cwnd
2017-01-09 16:43:03: [ 4] 0.00-1.00 sec 553 KBytes 4.53 Mbits/sec 1 29.7 KBytes
2017-01-09 16:43:03: [ 4] 1.00-2.00 sec 499 KBytes 4.09 Mbits/sec 1 26.9 KBytes
2017-01-09 16:43:03: [ 4] 2.00-3.00 sec 515 KBytes 4.22 Mbits/sec 0 32.5 KBytes
2017-01-09 16:43:03: [ 4] 3.00-4.00 sec 508 KBytes …iperf ×1