ad4: 194481MB <Maxtor 6B200M0 BANC19J0> at ata2-master SATA150
Code:
/dev/ad4
512 # sectorsize
203928109056 # mediasize in bytes (190G)
398297088 # mediasize in sectors
395136 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:B4068BQH # Disk ident.
I/O command overhead:
time to read 10MB block 0.154790 sec = 0.008 msec/sector
time to read 20480 sectors 1.395390 sec = 0.068 msec/sector
calculated command overhead = 0.061 msec/sector
Seek times:
Full stroke: 250 iter in 5.094325 sec = 20.377 msec
Half stroke: 250 iter in 3.887557 sec = 15.550 msec
Quarter stroke: 500 iter in 6.358262 sec = 12.717 msec
Short forward: 400 iter in 2.689920 sec = 6.725 msec
Short backward: 400 iter in 1.899913 sec = 4.750 msec
Seq outer: 2048 iter in 0.156133 sec = 0.076 msec
Seq inner: 2048 iter in 0.170133 sec = 0.083 msec
Transfer rates:
outside: 102400 kbytes in 1.614106 sec = 63441 kbytes/sec
middle: 102400 kbytes in 1.854823 sec = 55207 kbytes/sec
inside: 102400 kbytes in 2.940022 sec = 34830 kbytes/sec
ad6: 194481MB <Maxtor 6B200M0 BANC19J0> at ata3-master SATA150
Code:
/dev/ad6
512 # sectorsize
203928109056 # mediasize in bytes (190G)
398297088 # mediasize in sectors
395136 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:B40A9TDH # Disk ident.
I/O command overhead:
time to read 10MB block 0.181736 sec = 0.009 msec/sector
time to read 20480 sectors 1.393423 sec = 0.068 msec/sector
calculated command overhead = 0.059 msec/sector
Seek times:
Full stroke: 250 iter in 5.133403 sec = 20.534 msec
Half stroke: 250 iter in 3.825589 sec = 15.302 msec
Quarter stroke: 500 iter in 6.326555 sec = 12.653 msec
Short forward: 400 iter in 2.658225 sec = 6.646 msec
Short backward: 400 iter in 0.849711 sec = 2.124 msec
Seq outer: 2048 iter in 0.166015 sec = 0.081 msec
Seq inner: 2048 iter in 0.198724 sec = 0.097 msec
Transfer rates:
outside: 102400 kbytes in 1.624582 sec = 63032 kbytes/sec
middle: 102400 kbytes in 1.901403 sec = 53855 kbytes/sec
inside: 102400 kbytes in 3.025676 sec = 33844 kbytes/sec