root@pc-desktop:/home/bbs/bin# hdparm -Tt /dev/sdb
/dev/sdb:
Timing cached reads: 844 MB in 2.00 seconds = 422.02 MB/sec
Timing buffered disk reads: 40 MB in 3.00 seconds = 13.33 MB/sec
root@pc-desktop:/home/bbs/bin# hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 860 MB in 2.00 seconds = 430.08 MB/sec
Timing buffered disk reads: 58 MB in 3.02 seconds = 19.21 MB/sec
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