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Dùng hdparm -t -T /dev/hda để thử

Top speed: Seagate 15'000rpm

/dev/sdb: Timing cached reads: 3628 MB in 2.00 seconds = 1814.00 MB/sec Timing buffered disk reads: 274 MB in 3.01 seconds = 91.03 MB/sec

SATA on Intel Controller

/dev/sda: Timing cached reads: 2936 MB in 2.00 seconds = 1468.00 MB/sec Timing buffered disk reads: 120 MB in 3.03 seconds = 39.60 MB/sec

SCSI 10'000rpm

/dev/cciss/c0d1: Timing buffer-cache reads: 1852 MB in 2.00 seconds = 926.00 MB/sec Timing buffered disk reads: 22 MB in 3.00 seconds = 7.33 MB/sec

IDE 7200rpm

/dev/hda: Timing cached reads: 1720 MB in 2.00 seconds = 860.00 MB/sec Timing buffered disk reads: 158 MB in 3.02 seconds = 52.32 MB/sec

IDE 5400rpm

/dev/hda: Timing cached reads: 660 MB in 2.00 seconds = 329.80 MB/sec Timing buffered disk reads: 120 MB in 3.06 seconds = 39.19 MB/sec

IDE 5400pm (P3)

/dev/hda: Timing cached reads: 596 MB in 2.00 seconds = 297.43 MB/sec Timing buffered disk reads: 74 MB in 3.06 seconds = 24.15 MB/sec