ad0: 286167MB <Seagate ST3300622A 3.AAH> at ata0-master UDMA100
Code:
/dev/ad0
512 # sectorsize
300067970560 # mediasize in bytes (279G)
586070255 # mediasize in sectors
581418 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:5NF2VE47 # Disk ident.
I/O command overhead:
time to read 10MB block 0.179757 sec = 0.009 msec/sector
time to read 20480 sectors 1.481450 sec = 0.072 msec/sector
calculated command overhead = 0.064 msec/sector
Seek times:
Full stroke: 250 iter in 5.713823 sec = 22.855 msec
Half stroke: 250 iter in 4.523551 sec = 18.094 msec
Quarter stroke: 500 iter in 6.768790 sec = 13.538 msec
Short forward: 400 iter in 2.183977 sec = 5.460 msec
Short backward: 400 iter in 1.524321 sec = 3.811 msec
Seq outer: 2048 iter in 0.169669 sec = 0.083 msec
Seq inner: 2048 iter in 0.191090 sec = 0.093 msec
Transfer rates:
outside: 102400 kbytes in 1.705157 sec = 60053 kbytes/sec
middle: 102400 kbytes in 1.945732 sec = 52628 kbytes/sec
inside: 102400 kbytes in 3.297897 sec = 31050 kbytes/sec