[调查]硬盘速度（有测试方法）

thisplus

我的硬盘好慢啊

hubble.king

root@fc1:/var/ftp/harbor/conf]# hdparm -cdtT /dev/hda  

/dev/hda:
IO_support   =  0 (default 16-bit)
using_dma    =  1 (on)
Timing buffer-cache reads:   176 MB in  2.03 seconds =  86.70 MB/sec
Timing buffered disk reads:   34 MB in  3.05 seconds =  11.15 MB/sec

yangjinchao

1. dev

复制代码

supertcy

ibm x3500
8块sas硬盘做raid5：

hdparm -tT /dev/sdb

/dev/sdb:
Timing cached reads:   10064 MB in  2.00 seconds = 5037.80 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device
Timing buffered disk reads:  262 MB in  3.00 seconds =  87.23 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device