阿里云的服务器-IO-相对于对比Linode、美团、vultr

每台服务器的配置都不太一样,阿里云稍微高点的IO是ssd 其他是普通的(一般都是4核8G,高的有8核16G,都是按流量计费)。LInode vultr 都是默认最低配置 5美元,2.5美元
美团的是免费的最低配置(优惠卷)
使用的软件 hdparm
系统大部分是CentOS 7 或者 Fedora 26
不精准测试  不能用做任何参考
<code>
➜  ~ ruby rb.rb
vultr

/dev/vda1:
 Timing cached reads:   24340 MB in  2.00 seconds = 12180.75 MB/sec
 Timing buffered disk reads: 1168 MB in  3.00 seconds = 388.98 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   16814 MB in  2.00 seconds = 8416.46 MB/sec
 Timing buffered disk reads: 168 MB in  3.05 seconds =  55.15 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   17656 MB in  2.00 seconds = 8838.12 MB/sec
 Timing buffered disk reads: 162 MB in  3.01 seconds =  53.82 MB/sec

Linode1

/dev/xvda:
 Timing cached reads:   18184 MB in  1.98 seconds = 9182.51 MB/sec
 Timing buffered disk reads: 700 MB in  3.00 seconds = 232.96 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   17850 MB in  2.00 seconds = 8936.20 MB/sec
 Timing buffered disk reads: 162 MB in  3.01 seconds =  53.74 MB/sec

Linode2

/dev/sda:
 Timing cached reads:   16516 MB in  2.00 seconds = 8271.33 MB/sec
 Timing buffered disk reads: 5984 MB in  3.00 seconds = 1992.70 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   16278 MB in  2.00 seconds = 8147.42 MB/sec
 Timing buffered disk reads: 296 MB in  3.01 seconds =  98.47 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   15240 MB in  2.00 seconds = 7633.21 MB/sec
 Timing buffered disk reads: 152 MB in  3.00 seconds =  50.60 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   16834 MB in  2.00 seconds = 8425.96 MB/sec
 Timing buffered disk reads: 332 MB in  3.02 seconds = 109.95 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   17616 MB in  2.00 seconds = 8820.87 MB/sec
 Timing buffered disk reads: 330 MB in  3.01 seconds = 109.58 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   19880 MB in  2.00 seconds = 9954.78 MB/sec
 Timing buffered disk reads: 162 MB in  3.01 seconds =  53.83 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   20034 MB in  2.00 seconds = 10032.11 MB/sec
 Timing buffered disk reads: 162 MB in  3.01 seconds =  53.88 MB/sec

阿里云

/dev/vda1:
 Timing cached reads:   18622 MB in  2.00 seconds = 9323.39 MB/sec
 Timing buffered disk reads: 162 MB in  3.01 seconds =  53.78 MB/sec

美团

/dev/vda1:
 Timing cached reads:   19922 MB in  2.00 seconds = 9975.35 MB/sec
 Timing buffered disk reads: 462 MB in  3.01 seconds = 153.69 MB/sec

➜  ~

</code>

<img src="https://ipsec.in/wp-content/uploads/2017/08/001.png" alt="" width="867" height="821" class="alignnone size-full wp-image-49" />
<img src="https://ipsec.in/wp-content/uploads/2017/08/002.png" alt="" width="705" height="961" class="alignnone size-full wp-image-48" />

我的意思是阿里云的IO真的很一般
Linode2为什么这么高?有可能错误
此文章不用做任何参考