Bandwidth
网络吞吐是另外一个重要的指标。可以使用 iperf 进行测试，它通过创建 Server/Client 连接进行 TCP 与 UDP 的吞吐测试；
使用方法相较简单：需要两台机器，分别是 Client 与 Server：
# 在 Server 上 iperf3 -s -p 6900 # 在 Client 上 # 当命令执行结束时，将显示网络最大吞吐； # iperf3 -p 6900 -c 172.31.253.240 Connecting to host 172.31.253.240, port 6900 [ 5] local 172.31.253.248 port 38848 connected to 172.31.253.240 port 6900 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 114 MBytes 956 Mbits/sec 0 413 KBytes [ 5] 1.00-2.00 sec 109 MBytes 919 Mbits/sec 16 499 KBytes [ 5] 2.00-3.00 sec 111 MBytes 927 Mbits/sec 0 499 KBytes [ 5] 3.00-4.00 sec 111 MBytes 933 Mbits/sec 0 499 KBytes [ 5] 4.00-5.00 sec 112 MBytes 943 Mbits/sec 0 499 KBytes [ 5] 5.00-6.00 sec 112 MBytes 943 Mbits/sec 0 499 KBytes [ 5] 6.00-7.00 sec 111 MBytes 933 Mbits/sec 0 499 KBytes [ 5] 7.00-8.00 sec 113 MBytes 945 Mbits/sec 0 619 KBytes [ 5] 8.00-9.00 sec 112 MBytes 941 Mbits/sec 0 619 KBytes [ 5] 9.00-10.00 sec 111 MBytes 931 Mbits/sec 0 619 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.09 GBytes 937 Mbits/sec 16 sender [ 5] 0.00-10.04 sec 1.09 GBytes 931 Mbits/sec receiver iperf Done.
Latency
# ping 172.31.253.240 PING 172.31.253.240 (172.31.253.240) 56(84) bytes of data. 64 bytes from 172.31.253.240: icmp_seq=1 ttl=64 time=0.191 ms 64 bytes from 172.31.253.240: icmp_seq=2 ttl=64 time=0.278 ms 64 bytes from 172.31.253.240: icmp_seq=3 ttl=64 time=0.476 ms 64 bytes from 172.31.253.240: icmp_seq=4 ttl=64 time=0.384 ms 64 bytes from 172.31.253.240: icmp_seq=5 ttl=64 time=0.513 ms ... # ping 172.31.253.249 PING 172.31.253.249 (172.31.253.249) 56(84) bytes of data. 64 bytes from 172.31.253.249: icmp_seq=1 ttl=64 time=0.127 ms 64 bytes from 172.31.253.249: icmp_seq=2 ttl=64 time=0.128 ms 64 bytes from 172.31.253.249: icmp_seq=3 ttl=64 time=0.300 ms 64 bytes from 172.31.253.249: icmp_seq=4 ttl=64 time=0.283 ms 64 bytes from 172.31.253.249: icmp_seq=5 ttl=64 time=0.228 ms
我们将延迟视为 0.5ms