（1）测试查看硬盘读取速率 [root@SDJN-PS-NMS-SV66 ~]# hdparm -t /dev/sda1 /dev/sda1: Timing buffered disk reads:
（1）测试查看硬盘读取速率
[root@SDJN-PS-NMS-SV66 ~]# hdparm -t /dev/sda1
/dev/sda1:
Timing buffered disk reads: 500 MB in 1.77 seconds = 282.17 MB/sec
（2）测试查看硬盘读取速率和转速
[root@SDJN-PS-NMS-SV66 ~]# hdparm -tT /dev/sda1
/dev/sda1:
Timing cached reads: 17172 MB in 2.00 seconds = 8599.68 MB/sec
Timing buffered disk reads: 500 MB in 1.74 seconds = 287.13 MB/sec
[root@SDJN-PS-NMS-SV66 ~]#
截图：
