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120-test:/# apt-get install hdparm
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120-test:/home/lai# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 346 MB in 3.02 seconds = 114.65 MB/sec
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120-test:/home/lai# hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 2786 MB in 2.00 seconds = 1393.80 MB/sec
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121:~# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 310 MB in 3.01 seconds = 102.89 MB/sec
121:~# hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 2578 MB in 2.00 seconds = 1289.01 MB/sec
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lai@*:~$ sudo hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 442 MB in 3.01 seconds = 146.89 MB/sec
lai@*:~$ sudo hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 8306 MB in 2.00 seconds = 4162.04 MB/sec
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HA:/home/lai# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 176 MB in 3.01 seconds = 58.51 MB/sec
HA:/home/lai# hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 2966 MB in 2.00 seconds = 1483.26 MB/sec
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153:/home/lai# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 186 MB in 3.00 seconds = 61.93 MB/sec
153:/home/lai# hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 3012 MB in 2.00 seconds = 1505.78 MB/sec
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