ping 值延时 荷兰节点 比 洛杉矶 大约少 50ms, 荷兰是 228ms, 洛杉矶 是 285ms 左右，从国内电信机房测试的

如果访问 洛杉矶 节点好像是走的太平洋海底光缆，直接去了 美国洛杉矶

10  202.97.51.246 (202.97.51.246)  212.136 ms  212.158 ms  212.127 ms
11  202.97.50.82 (202.97.50.82)  209.627 ms  213.310 ms  209.622 ms
12  218.30.54.62 (218.30.54.62)  214.279 ms  216.559 ms  216.477 ms
13  ae0-110g.cr1.sjc1.us.nlayer.net (69.22.143.117)  214.341 ms  214.094 ms  226.645 ms
14  xe-1-2-1.cr1.ewr1.us.nlayer.net (69.22.142.138)  285.812 ms  285.781 ms  285.687 ms
15  ae2-50g.cr1.nyc2.us.nlayer.net (69.31.95.174)  310.662 ms  307.625 ms  307.930 ms
16  vlan-77.ar2.nyc3.us.nlayer.net (69.31.34.134)  375.416 ms  375.456 ms  375.966 ms

如果访问 荷兰节点 好像直接从电信直接就跳到瑞典了，瑞典到荷兰速度也极快 从这 http://www.cablemap.info/ 看了一下，绕的北冰洋的光缆好像还是属于 Future Cables，不知道怎么过去的

 8  202.97.33.74 (202.97.33.74)  8.522 ms  8.427 ms  8.363 ms
 9  202.97.60.38 (202.97.60.38)  11.308 ms  11.115 ms  11.256 ms
10  202.97.52.30 (202.97.52.30)  245.546 ms  245.524 ms  245.499 ms
11  ldn-b3-link.telia.net (80.239.193.141)  241.218 ms  241.601 ms  241.649 ms
12  ldn-bb2-link.telia.net (80.91.249.177)  283.634 ms ldn-bb1-link.telia.net (80.91.245.26)  226.922 ms ldn-bb2-link.telia.net (62.115.137.94)  226.267 ms
13  adm-bb4-link.telia.net (213.155.136.81)  227.943 ms adm-bb3-link.telia.net (62.115.136.148)  229.664 ms adm-bb3-link.telia.net (213.155.136.107)  255.166 ms

另外推荐个国外的 ping 服务器的网站： http://cloudmonitor.ca.com/en/ping.php