Seagate 15K.4 (SCSI), about 4 years old:
Code:
pinot# diskinfo -c -t /dev/da1
/dev/da1
512 # sectorsize
36703934464 # mediasize in bytes (34G)
71687372 # mediasize in sectors
4462 # Cylinders according to firmware.
255 # Heads according to firmware.
63 # Sectors according to firmware.
I/O command overhead:
time to read 10MB block 0.141310 sec = 0.007 msec/sector
time to read 20480 sectors 4.005664 sec = 0.196 msec/sector
calculated command overhead = 0.189 msec/sector
Seek times:
Full stroke: 250 iter in 2.293915 sec = 9.176 msec
Half stroke: 250 iter in 1.676370 sec = 6.705 msec
Quarter stroke: 500 iter in 2.717760 sec = 5.436 msec
Short forward: 400 iter in 1.457543 sec = 3.644 msec
Short backward: 400 iter in 0.886641 sec = 2.217 msec
Seq outer: 2048 iter in 0.392236 sec = 0.192 msec
Seq inner: 2048 iter in 0.540832 sec = 0.264 msec
Transfer rates:
outside: 102400 kbytes in 1.098587 sec = 93211 kbytes/sec
middle: 102400 kbytes in 1.232444 sec = 83087 kbytes/sec
inside: 102400 kbytes in 1.892680 sec = 54103 kbytes/sec