ad0: 76319MB <WDC WD800JB-00JJC0 05.01C05> at ata0-master UDMA100
Code:
/dev/ad0
512 # sectorsize
80026361856 # mediasize in bytes (75G)
156301488 # mediasize in sectors
155061 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:WD-WCAM9V946444 # Disk ident.
I/O command overhead:
time to read 10MB block 0.185617 sec = 0.009 msec/sector
time to read 20480 sectors 2.065096 sec = 0.101 msec/sector
calculated command overhead = 0.092 msec/sector
Seek times:
Full stroke: 250 iter in 5.380797 sec = 21.523 msec
Half stroke: 250 iter in 3.830487 sec = 15.322 msec
Quarter stroke: 500 iter in 6.384590 sec = 12.769 msec
Short forward: 400 iter in 2.258881 sec = 5.647 msec
Short backward: 400 iter in 2.426586 sec = 6.066 msec
Seq outer: 2048 iter in 0.233361 sec = 0.114 msec
Seq inner: 2048 iter in 0.234686 sec = 0.115 msec
Transfer rates:
outside: 102400 kbytes in 1.800840 sec = 56862 kbytes/sec
middle: 102400 kbytes in 1.951145 sec = 52482 kbytes/sec
inside: 102400 kbytes in 3.060375 sec = 33460 kbytes/sec