监测硬盘读写速度

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[root@Opus1 ~]# yum install hdparm –y 安装hdparm


[root@Opus1 ~]# hdparm -Tt /dev/sda

/dev/sda:

Timing cached reads:   9822 MB in  2.00 seconds = 4916.34 MB/sec
Timing buffered disk reads: 406 MB in  3.00 seconds = 135.13 MB/sec

[root@Opus1 ~]# hdparm -Tt --direct /dev/sda1

/dev/sda1:

Timing O_DIRECT cached reads:   510 MB in  2.01 seconds = 254.14 MB/sec
Timing O_DIRECT disk reads: 402 MB in  3.00 seconds = 133.86 MB/sec

[root@Opus1 ~]# hdparm -Tt /dev/sda1

/dev/sda1:

Timing cached reads:   10912 MB in  2.00 seconds = 5462.66 MB/sec
Timing buffered disk reads: 408 MB in  3.01 seconds = 135.60 MB/sec

[root@Opus1 ~]#

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