# VPS和机场的选择问题

尽量选择机场，自建VPS会遇到很多不确定因素。

选择机场的注意点

* 选择大机场
* 从大机场里面选择允许免费试用的机场，先体验再抉择。没有免费的话，先买一个月试用。
* 测试机场的速度【选择高峰期测试，如周末晚上】

不要把多少多少毫秒的延迟当成主要的参考对比标准。因为这指的是数据包通讯的一个周期（RTT，Round Trip Time），并不能代表实际使用中你能跑出的速度和带宽【在单位时间（一般指的是1秒钟）内能传输的数据量】。


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