ac2
root@hash:/etc/rc.d# hdparm -T -t /dev/hda

/dev/hda:
 Timing buffer-cache reads:   128 MB in  1.00 seconds =128.00 MB/sec
 Timing buffered disk reads:  64 MB in 71.78 seconds =913.01 kB/sec
root@hash:/etc/rc.d#

ac1
root@hash:~# hdparm -T -t /dev/hda

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.96 seconds =133.33 MB/sec
 Timing buffered disk reads:  64 MB in  1.72 seconds = 37.21 MB/sec
root@hash:~#