ad4: 114473MB <Seagate ST3120022A 3.04> at ata2-master UDMA100
Code:
/dev/ad4
512 # sectorsize
120034123776 # mediasize in bytes (112G)
234441648 # mediasize in sectors
232581 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:3JT03PGJ # Disk ident.
I/O command overhead:
time to read 10MB block 0.254739 sec = 0.012 msec/sector
time to read 20480 sectors 9.037125 sec = 0.441 msec/sector
calculated command overhead = 0.429 msec/sector
Seek times:
Full stroke: 250 iter in 5.730336 sec = 22.921 msec
Half stroke: 250 iter in 4.476435 sec = 17.906 msec
Quarter stroke: 500 iter in 7.122016 sec = 14.244 msec
Short forward: 400 iter in 2.161611 sec = 5.404 msec
Short backward: 400 iter in 1.193050 sec = 2.983 msec
Seq outer: 2048 iter in 0.932468 sec = 0.455 msec
Seq inner: 2048 iter in 0.942871 sec = 0.460 msec
Transfer rates:
outside: 102400 kbytes in 1.964194 sec = 52133 kbytes/sec
middle: 102400 kbytes in 2.175116 sec = 47078 kbytes/sec
inside: 102400 kbytes in 3.431121 sec = 29844 kbytes/sec
ad10: 953869MB <SAMSUNG HD103UJ 1AA01112> at ata5-master SATA150
Code:
/dev/ad10
512 # sectorsize
1000204886016 # mediasize in bytes (932G)
1953525168 # mediasize in sectors
1938021 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:S13PJ1MQ602787 # Disk ident.
I/O command overhead:
time to read 10MB block 0.180889 sec = 0.009 msec/sector
time to read 20480 sectors 9.345026 sec = 0.456 msec/sector
calculated command overhead = 0.447 msec/sector
Seek times:
Full stroke: 250 iter in 6.147410 sec = 24.590 msec
Half stroke: 250 iter in 4.646249 sec = 18.585 msec
Quarter stroke: 500 iter in 8.820316 sec = 17.641 msec
Short forward: 400 iter in 1.664426 sec = 4.161 msec
Short backward: 400 iter in 2.615189 sec = 6.538 msec
Seq outer: 2048 iter in 0.996294 sec = 0.486 msec
Seq inner: 2048 iter in 0.995813 sec = 0.486 msec
Transfer rates:
outside: 102400 kbytes in 1.647798 sec = 62144 kbytes/sec
middle: 102400 kbytes in 1.619156 sec = 63243 kbytes/sec
inside: 102400 kbytes in 1.930229 sec = 53051 kbytes/sec