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Old 26th September 2010
da1 da1 is offline
Fdisk Soldier
 
Join Date: Feb 2009
Location: Berlin, DE
Posts: 49
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Code:
ad4: 476938MB <Seagate ST3500418AS CC34> at ata2-master UDMA100 SATA 1.5Gb/s
ad6: 610480MB <WDC WD6400AARS-00Y5B1 80.00A80> at ata3-master UDMA100 SATA 1.5Gb/s
ad8: 476940MB <Seagate ST3500312CS SC13> at ata4-master UDMA100 SATA 1.5Gb/s
ad10: 476940MB <Seagate ST3500312CS SC13> at ata5-master UDMA100 SATA 1.5Gb/s
ad14: 152626MB <SAMSUNG HD160JJ ZM100-47> at ata7-master UDMA100 SATA
ad16: 156334MB <Maxtor 6Y160M0 YAR51BW0> at ata8-master UDMA100 SATA
ad14+16 -> gm0 (mirror)
ad8+10 -> gm1 (mirror)

Code:
/dev/mirror/gm0s1a
        512             # sectorsize
        154671596032    # mediasize in bytes (144G)
        302092961       # mediasize in sectors
        0               # stripesize
        1073774080      # stripeoffset
        18804           # Cylinders according to firmware.
        255             # Heads according to firmware.
        63              # Sectors according to firmware.

I/O command overhead:
        time to read 10MB block      0.487426 sec       =    0.024 msec/sector
        time to read 20480 sectors   2.774225 sec       =    0.135 msec/sector
        calculated command overhead                     =    0.112 msec/sector

Seek times:
        Full stroke:      250 iter in   1.905288 sec =    7.621 msec
        Half stroke:      250 iter in   1.656508 sec =    6.626 msec
        Quarter stroke:   500 iter in   3.134943 sec =    6.270 msec
        Short forward:    400 iter in   2.531556 sec =    6.329 msec
        Short backward:   400 iter in   2.589457 sec =    6.474 msec
        Seq outer:       2048 iter in   0.350186 sec =    0.171 msec
        Seq inner:       2048 iter in   0.341217 sec =    0.167 msec
Transfer rates:
        outside:       102400 kbytes in   3.977510 sec =    25745 kbytes/sec
        middle:        102400 kbytes in   4.372004 sec =    23422 kbytes/sec
        inside:        102400 kbytes in   5.359596 sec =    19106 kbytes/sec


/dev/mirror/gm1a
        512             # sectorsize
        500107853824    # mediasize in bytes (466G)
        976773152       # mediasize in sectors
        0               # stripesize
        8192            # stripeoffset
        969020          # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.

I/O command overhead:
        time to read 10MB block      0.248465 sec       =    0.012 msec/sector
        time to read 20480 sectors   1.773934 sec       =    0.087 msec/sector
        calculated command overhead                     =    0.074 msec/sector

Seek times:
        Full stroke:      250 iter in   1.659988 sec =    6.640 msec
        Half stroke:      250 iter in   1.499807 sec =    5.999 msec
        Quarter stroke:   500 iter in   2.801351 sec =    5.603 msec
        Short forward:    400 iter in   2.652671 sec =    6.632 msec
        Short backward:   400 iter in   2.641057 sec =    6.603 msec
        Seq outer:       2048 iter in   0.521088 sec =    0.254 msec
        Seq inner:       2048 iter in   0.436988 sec =    0.213 msec
Transfer rates:
        outside:       102400 kbytes in   2.209148 sec =    46353 kbytes/sec
        middle:        102400 kbytes in   2.190127 sec =    46755 kbytes/sec
        inside:      diskinfo: read error or disk too small for test.: Operation not supported <- no idea wtf


/dev/ad4s1d
        512             # sectorsize
        500106281472    # mediasize in bytes (466G)
        976770081       # mediasize in sectors
        0               # stripesize
        32256           # stripeoffset
        969017          # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        6VM31DD4        # Disk ident.

I/O command overhead:
        time to read 10MB block      0.118732 sec       =    0.006 msec/sector
        time to read 20480 sectors   1.537903 sec       =    0.075 msec/sector
        calculated command overhead                     =    0.069 msec/sector

Seek times:
        Full stroke:      250 iter in   5.978958 sec =   23.916 msec
        Half stroke:      250 iter in   4.153111 sec =   16.612 msec
        Quarter stroke:   500 iter in   6.673901 sec =   13.348 msec
        Short forward:    400 iter in   2.011170 sec =    5.028 msec
        Short backward:   400 iter in   2.430351 sec =    6.076 msec
        Seq outer:       2048 iter in   0.181747 sec =    0.089 msec
        Seq inner:       2048 iter in   0.183024 sec =    0.089 msec
Transfer rates:
        outside:       102400 kbytes in   0.990563 sec =   103376 kbytes/sec
        middle:        102400 kbytes in   0.991175 sec =   103312 kbytes/sec
        inside:        102400 kbytes in   1.545671 sec =    66250 kbytes/sec


/dev/ad6s1d
        512             # sectorsize
        640134996480    # mediasize in bytes (596G)
        1250263665      # mediasize in sectors
        0               # stripesize
        32256           # stripeoffset
        1240340         # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        WD-WCAV5D144732 # Disk ident.

I/O command overhead:
        time to read 10MB block      0.132170 sec       =    0.006 msec/sector
        time to read 20480 sectors   2.507678 sec       =    0.122 msec/sector
        calculated command overhead                     =    0.116 msec/sector

Seek times:
        Full stroke:      250 iter in   4.996024 sec =   19.984 msec
        Half stroke:      250 iter in   3.932058 sec =   15.728 msec
        Quarter stroke:   500 iter in   6.775971 sec =   13.552 msec
        Short forward:    400 iter in   2.097176 sec =    5.243 msec
        Short backward:   400 iter in   3.413464 sec =    8.534 msec
        Seq outer:       2048 iter in   0.346267 sec =    0.169 msec
        Seq inner:       2048 iter in   0.285257 sec =    0.139 msec
Transfer rates:
        outside:       102400 kbytes in   1.040689 sec =    98396 kbytes/sec
        middle:        102400 kbytes in   1.171794 sec =    87387 kbytes/sec
        inside:        102400 kbytes in   1.605200 sec =    63793 kbytes/sec
however, I consider these results useless since I could never reach the values stated @ Transfer rate.

Tops was ~51MB write on ad6 (s-ata1 controller)
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