把 iperf3-server 跑在容器里再测一遍：
# 在容器中启动 iperf3-server，并映射到宿主机端口 6201 > docker run -it --rm --name=iperf3-server -p 6201:5201 networkstatic/iperf3 -s > docker inspect --format "{{ .NetworkSettings.IPAddress }}" iperf3-server 172.17.0.2 ----------------------------- # 测试容器之间互访的速度，ip 为 iperf3-server 的容器 ip，速度要慢一些。 # 毕竟过了 veth -> veth -> docker0 -> veth -> veth 五层虚拟网络接口 ❯ docker run -it --rm networkstatic/iperf3 -c 172.17.0.2 Connecting to host 172.17.0.2, port 5201 [ 5] local 172.17.0.3 port 40776 connected to 172.17.0.2 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 4.74 GBytes 40.7 Gbits/sec 0 600 KBytes [ 5] 1.00-2.00 sec 4.48 GBytes 38.5 Gbits/sec 0 600 KBytes [ 5] 2.00-3.00 sec 5.38 GBytes 46.2 Gbits/sec 0 600 KBytes [ 5] 3.00-4.00 sec 5.39 GBytes 46.3 Gbits/sec 0 600 KBytes [ 5] 4.00-5.00 sec 5.42 GBytes 46.6 Gbits/sec 0 600 KBytes [ 5] 5.00-6.00 sec 5.39 GBytes 46.3 Gbits/sec 0 600 KBytes [ 5] 6.00-7.00 sec 5.38 GBytes 46.2 Gbits/sec 0 635 KBytes [ 5] 7.00-8.00 sec 5.37 GBytes 46.1 Gbits/sec 0 667 KBytes [ 5] 8.00-9.00 sec 6.01 GBytes 51.7 Gbits/sec 0 735 KBytes [ 5] 9.00-10.00 sec 5.74 GBytes 49.3 Gbits/sec 0 735 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 53.3 GBytes 45.8 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 53.3 GBytes 45.8 Gbits/sec receiver # 本机直接访问容器 ip，走的是 docker0 网桥，居然还挺快 ❯ iperf3 -c 172.17.0.2 Connecting to host 172.17.0.2, port 5201 [ 5] local 172.17.0.1 port 56486 connected to 172.17.0.2 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 5.01 GBytes 43.0 Gbits/sec 0 632 KBytes [ 5] 1.00-2.00 sec 5.19 GBytes 44.6 Gbits/sec 0 703 KBytes [ 5] 2.00-3.00 sec 6.46 GBytes 55.5 Gbits/sec 0 789 KBytes [ 5] 3.00-4.00 sec 6.80 GBytes 58.4 Gbits/sec 0 789 KBytes [ 5] 4.00-5.00 sec 6.82 GBytes 58.6 Gbits/sec 0 913 KBytes [ 5] 5.00-6.00 sec 6.79 GBytes 58.3 Gbits/sec 0 1007 KBytes [ 5] 6.00-7.00 sec 6.63 GBytes 56.9 Gbits/sec 0 1.04 MBytes [ 5] 7.00-8.00 sec 6.75 GBytes 58.0 Gbits/sec 0 1.04 MBytes [ 5] 8.00-9.00 sec 6.19 GBytes 53.2 Gbits/sec 0 1.04 MBytes [ 5] 9.00-10.00 sec 6.55 GBytes 56.3 Gbits/sec 0 1.04 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 63.2 GBytes 54.3 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 63.2 GBytes 54.3 Gbits/sec receiver # 如果走本机 loopback 地址 + 容器端口映射，速度就慢了好多 # 或许是因为用 iptables 做端口映射导致的？ ❯ iperf3 -c 127.0.0.1 -p 6201 Connecting to host 127.0.0.1, port 6201 [ 5] local 127.0.0.1 port 48862 connected to 127.0.0.1 port 6201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 2.71 GBytes 23.3 Gbits/sec 0 1.37 MBytes [ 5] 1.00-2.00 sec 3.64 GBytes 31.3 Gbits/sec 0 1.37 MBytes [ 5] 2.00-3.00 sec 4.08 GBytes 35.0 Gbits/sec 0 1.37 MBytes [ 5] 3.00-4.00 sec 3.49 GBytes 30.0 Gbits/sec 0 1.37 MBytes [ 5] 4.00-5.00 sec 5.50 GBytes 47.2 Gbits/sec 2 1.37 MBytes [ 5] 5.00-6.00 sec 4.06 GBytes 34.9 Gbits/sec 0 1.37 MBytes [ 5] 6.00-7.00 sec 4.12 GBytes 35.4 Gbits/sec 0 1.37 MBytes [ 5] 7.00-8.00 sec 3.99 GBytes 34.3 Gbits/sec 0 1.37 MBytes [ 5] 8.00-9.00 sec 3.49 GBytes 30.0 Gbits/sec 0 1.37 MBytes [ 5] 9.00-10.00 sec 5.51 GBytes 47.3 Gbits/sec 0 1.37 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 40.6 GBytes 34.9 Gbits/sec 2 sender [ 5] 0.00-10.00 sec 40.6 GBytes 34.9 Gbits/sec receiver # 可走 wlp4s0 + 容器端口映射，速度也不慢啊 ❯ iperf3 -c 192.168.31.228 -p 6201 Connecting to host 192.168.31.228, port 6201 [ 5] local 192.168.31.228 port 54582 connected to 192.168.31.228 port 6201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 4.34 GBytes 37.3 Gbits/sec 0 795 KBytes [ 5] 1.00-2.00 sec 4.78 GBytes 41.0 Gbits/sec 0 834 KBytes [ 5] 2.00-3.00 sec 6.26 GBytes 53.7 Gbits/sec 0 834 KBytes [ 5] 3.00-4.00 sec 6.30 GBytes 54.1 Gbits/sec 0 875 KBytes [ 5] 4.00-5.00 sec 6.26 GBytes 53.8 Gbits/sec 0 875 KBytes [ 5] 5.00-6.00 sec 5.75 GBytes 49.4 Gbits/sec 0 875 KBytes [ 5] 6.00-7.00 sec 5.49 GBytes 47.2 Gbits/sec 0 966 KBytes [ 5] 7.00-8.00 sec 5.72 GBytes 49.1 Gbits/sec 2 966 KBytes [ 5] 8.00-9.00 sec 4.81 GBytes 41.3 Gbits/sec 2 966 KBytes [ 5] 9.00-10.00 sec 5.98 GBytes 51.4 Gbits/sec 0 966 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 55.7 GBytes 47.8 Gbits/sec 4 sender [ 5] 0.00-10.00 sec 55.7 GBytes 47.8 Gbits/sec receiver