AWS对于IO的限制，配置越高，限制越少，这里我们benchmark 一下80刀的这一款，4 cores，16GB RAM， 320GB SSD

测试使用的程序:

wget -qO- bench.sh | bash

下面是结果:

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CPU model : Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz
Number of cores : 4
CPU frequency : 2399.858 MHz
Total size of Disk : 320.0 GB (1.1 GB Used)
Total amount of Mem : 15883 MB (171 MB Used)
Total amount of Swap : 0 MB (0 MB Used)
System uptime : 0 days, 0 hour 9 min
Load average : 0.15, 0.15, 0.09
OS : CentOS 7.6.1810
Arch : x86_64 (64 Bit)
Kernel : 3.10.0-957.1.3.el7.x86_64
----------------------------------------------------------------------
I/O speed(1st run) : 134 MB/s
I/O speed(2nd run) : 130 MB/s
I/O speed(3rd run) : 130 MB/s
Average I/O speed : 131.3 MB/s
----------------------------------------------------------------------

测试了几次，基本都是这个IO速度