ad0: 4103MB <Seagate ST34321A 3.04> at ata0-master UDMA33
Code:
/dev/ad0
512 # sectorsize
4303272960 # mediasize in bytes (4.0G)
8404830 # mediasize in sectors
8894 # Cylinders according to firmware.
15 # Heads according to firmware.
63 # Sectors according to firmware.
ad:GT430125 # Disk ident.
I/O command overhead:
time to read 10MB block 1.061872 sec = 0.052 msec/sector
time to read 20480 sectors 12.702438 sec = 0.620 msec/sector
calculated command overhead = 0.568 msec/sector
Seek times:
Full stroke: 250 iter in 5.703315 sec = 22.813 msec
Half stroke: 250 iter in 5.139045 sec = 20.556 msec
Quarter stroke: 500 iter in 8.856557 sec = 17.713 msec
Short forward: diskinfo: read error or disk too small for test.: Input/output error