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Old 2nd February 2010
eabris
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Default IBM SCSI RAID-5EE 6x73GB

FreeBSD 7.2 amd64

Code:
/dev/ipsd0
        512             # sectorsize
        293626445824    # mediasize in bytes (273G)
        573489152       # mediasize in sectors
        35838           # Cylinders according to firmware.
        254             # Heads according to firmware.
        63              # Sectors according to firmware.

I/O command overhead:
        time to read 10MB block      0.189786 sec       =    0.009 msec/sector
        time to read 20480 sectors   1.913369 sec       =    0.093 msec/sector
        calculated command overhead                     =    0.084 msec/sector

Seek times:
        Full stroke:      250 iter in   0.989590 sec =    3.958 msec
        Half stroke:      250 iter in   2.148981 sec =    8.596 msec
        Quarter stroke:   500 iter in   1.888773 sec =    3.778 msec
        Short forward:    400 iter in   0.471670 sec =    1.179 msec
        Short backward:   400 iter in   1.470429 sec =    3.676 msec
        Seq outer:       2048 iter in   0.193860 sec =    0.095 msec
        Seq inner:       2048 iter in   0.197215 sec =    0.096 msec
Transfer rates:
        outside:       102400 kbytes in   1.433645 sec =    71426 kbytes/sec
        middle:        102400 kbytes in   1.567306 sec =    65335 kbytes/sec
        inside:        102400 kbytes in   1.566834 sec =    65355 kbytes/sec

Last edited by vermaden; 2nd February 2010 at 09:27 AM. Reason: Use [ code ] tags.
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