问大家一个硬盘的问题.

daienming

[root@localhost ~]# hdparm -d1 -X68 -c3 -m16 /dev/hda

/dev/hda:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting using_dma to 1 (on)
setting xfermode to 68 (UltraDMA mode4)
multcount    = 16 (on)
IO_support   =  3 (32-bit w/sync)
using_dma    =  1 (on)
[root@localhost ~]# hdparm -t /dev/hda

/dev/hda:
Timing buffered disk reads:    6 MB in  3.36 seconds =   1.79 MB/sec
[root@localhost ~]# hdparm -T /dev/hda

/dev/hda:
Timing cached reads:   500 MB in  2.01 seconds = 248.55 MB/sec
[root@localhost ~]# hdparm -v /dev/hda

/dev/hda:
multcount    = 16 (on)
IO_support   =  3 (32-bit w/sync)
unmaskirq    =  0 (off)
using_dma    =  1 (on)
keepsettings =  0 (off)
readonly     =  0 (off)
readahead    = 256 (on)
geometry     = 65535/16/63, sectors = 40020664320, start = 0
[root@localhost ~]#

我的硬盘为什么这么慢,我应该怎么优化?

d00m3d

Try

hdparm -d1 -X68 -c3 -m16 -u1 -a1024 /dev/hda