ad4: 76318MB <Seagate ST380215AS 3.AAD> at ata2-master SATA150
Code:
/dev/ad4
512 # sectorsize
80025280000 # mediasize in bytes (75G)
156299375 # mediasize in sectors
155058 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:6RA3Q2JE # Disk ident.
I/O command overhead:
time to read 10MB block 0.159474 sec = 0.008 msec/sector
time to read 20480 sectors 1.646036 sec = 0.080 msec/sector
calculated command overhead = 0.073 msec/sector
Seek times:
Full stroke: 250 iter in 6.099554 sec = 24.398 msec
Half stroke: 250 iter in 4.340127 sec = 17.361 msec
Quarter stroke: 500 iter in 6.732474 sec = 13.465 msec
Short forward: 400 iter in 1.277421 sec = 3.194 msec
Short backward: 400 iter in 1.257770 sec = 3.144 msec
Seq outer: 2048 iter in 0.179644 sec = 0.088 msec
Seq inner: 2048 iter in 0.200410 sec = 0.098 msec
Transfer rates:
outside: 102400 kbytes in 1.378737 sec = 74271 kbytes/sec
middle: 102400 kbytes in 1.709696 sec = 59894 kbytes/sec
inside: 102400 kbytes in 2.821554 sec = 36292 kbytes/sec