I have three of these drives in my home system. The results are within 3% of each other for all three. So I've only posted the data from one:
Code:
ad4: detached
ad4: 152627MB <WDC WD1600JS-56MHB1 10.02E01> at ata2-master SATA150
ad4: 152627MB <WDC WD1600JS-56MHB1 10.02E01> at ata2-master SATA150
Code:
# diskinfo -c -t /dev/ad4
/dev/ad4
512 # sectorsize
160041885696 # mediasize in bytes (149G)
312581808 # mediasize in sectors
310101 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:WD-WCANMD687666 # Disk ident.
I/O command overhead:
time to read 10MB block 0.465710 sec = 0.023 msec/sector
time to read 20480 sectors 1.906245 sec = 0.093 msec/sector
calculated command overhead = 0.070 msec/sector
Seek times:
Full stroke: 250 iter in 5.352183 sec = 21.409 msec
Half stroke: 250 iter in 3.744667 sec = 14.979 msec
Quarter stroke: 500 iter in 6.328028 sec = 12.656 msec
Short forward: 400 iter in 1.750907 sec = 4.377 msec
Short backward: 400 iter in 2.813370 sec = 7.033 msec
Seq outer: 2048 iter in 0.463089 sec = 0.226 msec
Seq inner: 2048 iter in 0.216843 sec = 0.106 msec
Transfer rates:
outside: 102400 kbytes in 1.736854 sec = 58957 kbytes/sec
middle: 102400 kbytes in 1.900757 sec = 53873 kbytes/sec
inside: 102400 kbytes in 3.323692 sec = 30809 kbytes/sec