我们通过孟加拉服务器，ping 全球不同节点，看下延时都是多少
孟加拉ping
国内ping hengxun.cn
PING hengxun.cn (47.113.184.237) 56(84) bytes of data.
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=1 ttl=109 time=271 ms
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=2 ttl=109 time=270 ms
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=3 ttl=109 time=270 ms
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=4 ttl=109 time=272 ms
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=5 ttl=109 time=270 ms
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=6 ttl=109 time=270 ms
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=7 ttl=109 time=271 ms
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=8 ttl=109 time=271 ms
64 bytes from 47.113.184.237 (47.113.184.237): icmp_seq=9 ttl=109 time=277 ms

香港PING 154.39.250.177 (154.39.250.177) 56(84) bytes of data.
64 bytes from 154.39.250.177: icmp_seq=1 ttl=53 time=106 ms
64 bytes from 154.39.250.177: icmp_seq=2 ttl=53 time=106 ms
64 bytes from 154.39.250.177: icmp_seq=3 ttl=53 time=106 ms
64 bytes from 154.39.250.177: icmp_seq=4 ttl=53 time=106 ms
64 bytes from 154.39.250.177: icmp_seq=5 ttl=53 time=106 ms

新加坡PING 51.79.254.73 (51.79.254.73) 56(84) bytes of data.
64 bytes from 51.79.254.73: icmp_seq=1 ttl=51 time=48.1 ms
64 bytes from 51.79.254.73: icmp_seq=2 ttl=51 time=48.1 ms
64 bytes from 51.79.254.73: icmp_seq=3 ttl=51 time=48.2 ms
64 bytes from 51.79.254.73: icmp_seq=4 ttl=51 time=48.1 ms

香港PING 181.214.240.102 (181.214.240.102) 56(84) bytes of data.
64 bytes from 181.214.240.102: icmp_seq=1 ttl=115 time=219 ms
64 bytes from 181.214.240.102: icmp_seq=2 ttl=115 time=219 ms
64 bytes from 181.214.240.102: icmp_seq=3 ttl=115 time=219 ms
64 bytes from 181.214.240.102: icmp_seq=4 ttl=115 time=219 ms
64 bytes from 181.214.240.102: icmp_seq=5 ttl=115 time=219 ms

英国PING 217.146.82.177 (217.146.82.177) 56(84) bytes of data.
64 bytes from 217.146.82.177: icmp_seq=1 ttl=56 time=164 ms
64 bytes from 217.146.82.177: icmp_seq=2 ttl=56 time=165 ms
64 bytes from 217.146.82.177: icmp_seq=3 ttl=56 time=165 ms
64 bytes from 217.146.82.177: icmp_seq=4 ttl=56 time=164 ms
64 bytes from 217.146.82.177: icmp_seq=5 ttl=56 time=164 ms

印度PING 103.133.214.220 (103.133.214.220) 56(84) bytes of data.
64 bytes from 103.133.214.220: icmp_seq=1 ttl=54 time=56.0 ms
64 bytes from 103.133.214.220: icmp_seq=2 ttl=54 time=56.1 ms
64 bytes from 103.133.214.220: icmp_seq=3 ttl=54 time=56.0 ms
64 bytes from 103.133.214.220: icmp_seq=4 ttl=54 time=56.1 ms
64 bytes from 103.133.214.220: icmp_seq=5 ttl=54 time=56.1 ms