[FreeBSD] Diskinfo

#diskinfo -c -t /dev/ad0s1a

2011.10.25
/dev/ad0s1a
        512             # sectorsize
        2147483648      # mediasize in bytes (2.0G)
        4194304         # mediasize in sectors
        4161            # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        ad:3FG0EB76s0s0 # Disk ident.

I/O command overhead:
        time to read 10MB block      0.790693 sec       =    0.039 msec/sector
        time to read 20480 sectors   2.475622 sec       =    0.121 msec/sector
        calculated command overhead                     =    0.082 msec/sector

Seek times:
        Full stroke:      250 iter in  12.407057 sec =   49.628 msec
        Half stroke:    diskinfo: read error or disk too small for test.: No such file or directory

===================================================================================================

/dev/ad10s1d
        512             # sectorsize
        2000388063744   # mediasize in bytes (1.8T)
        3907007937      # mediasize in sectors
        3875999         # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        ad:MN1221F3015PPAs0s3   # Disk ident.

I/O command overhead:
        time to read 10MB block      0.142389 sec       =    0.007 msec/sector
        time to read 20480 sectors   1.689862 sec       =    0.083 msec/sector
        calculated command overhead                     =    0.076 msec/sector

Seek times:
        Full stroke:      250 iter in   6.066081 sec =   24.264 msec
        Half stroke:      250 iter in   4.825183 sec =   19.301 msec
        Quarter stroke:   500 iter in   7.948886 sec =   15.898 msec
        Short forward:    400 iter in   1.517597 sec =    3.794 msec
        Short backward:   400 iter in   1.921583 sec =    4.804 msec
        Seq outer:       2048 iter in   0.185228 sec =    0.090 msec
        Seq inner:       2048 iter in   0.194037 sec =    0.095 msec
Transfer rates:
        outside:       102400 kbytes in   0.811261 sec =   126,223 kbytes/sec
        middle:        102400 kbytes in   1.158508 sec =    88,390 kbytes/sec
        inside:        102400 kbytes in   1.448788 sec =    70,680 kbytes/sec

===================================================================================================

/dev/stripe/st0a
        512             # sectorsize
        800176898048    # mediasize in bytes (745G)
        1562845504      # mediasize in sectors

I/O command overhead:
        time to read 10MB block      0.237582 sec       =    0.012 msec/sector
        time to read 20480 sectors   1.628969 sec       =    0.080 msec/sector
        calculated command overhead                     =    0.068 msec/sector

Seek times:
        Full stroke:      250 iter in   1.580470 sec =    6.322 msec
        Half stroke:      250 iter in   4.481658 sec =   17.927 msec
        Quarter stroke:   500 iter in   7.265347 sec =   14.531 msec
        Short forward:    400 iter in   1.276615 sec =    3.192 msec
        Short backward:   400 iter in   2.368622 sec =    5.922 msec
        Seq outer:       2048 iter in   0.168932 sec =    0.082 msec
        Seq inner:       2048 iter in   0.230193 sec =    0.112 msec
Transfer rates:
        outside:       102400 kbytes in   2.288359 sec =    44,748 kbytes/sec
        middle:        102400 kbytes in   2.331629 sec =    43,918 kbytes/sec
        inside:        102400 kbytes in   2.398416 sec =    42,695 kbytes/sec
SSD reference
FreeBSD 8.0-RELEASE-p2 on a Intel X-25V G2 40GB
ad0: 38166MB <INTEL SSDSA2M040G2GC 2CV102HB> at ata0-master SATA300
/dev/ad0s1a
        512             # sectorsize
        35826328064     # mediasize in bytes (33G)
        69973297        # mediasize in sectors
        69417           # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        CVGB950400J8040GGN      # Disk ident.

I/O command overhead:
        time to read 10MB block      0.063820 sec       =    0.003 msec/sector
        time to read 20480 sectors   1.878730 sec       =    0.092 msec/sector
        calculated command overhead                     =    0.089 msec/sector

Seek times:
        Full stroke:      250 iter in   0.018572 sec =    0.074 msec
        Half stroke:      250 iter in   0.017989 sec =    0.072 msec
        Quarter stroke:   500 iter in   0.034450 sec =    0.069 msec
        Short forward:    400 iter in   0.023765 sec =    0.059 msec
        Short backward:   400 iter in   0.032332 sec =    0.081 msec
        Seq outer:       2048 iter in   0.095603 sec =    0.047 msec
        Seq inner:       2048 iter in   0.099419 sec =    0.049 msec
Transfer rates:
        outside:       102400 kbytes in   0.654993 sec =   156,338 kbytes/sec
        middle:        102400 kbytes in   0.508768 sec =   201,271 kbytes/sec
        inside:        102400 kbytes in   0.438239 sec =   233,662 kbytes/sec

換上 i7 3770 + 32GB DDR3-1600 + Intel 60G SSD


Seagate 3T preference
FreeBSD 9.0-RELEASE on a Intel i7-3770 Intel 60GB SSD
2861588MB (5860533168 512 byte sectors: 16H 63S/T 16383C)
<ST3000DM001-1CH166 CC26> ATA-8 SATA 3.x device
300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
# diskinfo -c -t ada4
ada4
        512             # sectorsize
        3000592982016   # mediasize in bytes (2.7T)
        5860533168      # mediasize in sectors
        4096            # stripesize
        0               # stripeoffset
        5814021         # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        Z1F2KQRW        # Disk ident.

I/O command overhead:
        time to read 10MB block      0.085803 sec       =    0.004 msec/sector
        time to read 20480 sectors   2.805409 sec       =    0.137 msec/sector
        calculated command overhead                     =    0.133 msec/sector

Seek times:
        Full stroke:      250 iter in   5.836573 sec =   23.346 msec
        Half stroke:      250 iter in   4.805167 sec =   19.221 msec
        Quarter stroke:   500 iter in   7.186838 sec =   14.374 msec
        Short forward:    400 iter in   2.784582 sec =    6.961 msec
        Short backward:   400 iter in   3.006485 sec =    7.516 msec
        Seq outer:       2048 iter in   0.109606 sec =    0.054 msec
        Seq inner:       2048 iter in   0.122363 sec =    0.060 msec
Transfer rates:
        outside:       102400 kbytes in   0.637955 sec =   160513 kbytes/sec
        middle:        102400 kbytes in   0.655223 sec =   156283 kbytes/sec
        inside:        102400 kbytes in   1.138707 sec =    89927 kbytes/sec
M4 SSD preference
FreeBSD 9.0-RELEASE on a Intel i7-3770 Intel 60GB SSD
61057MB (125045424 512 byte sectors: 16H 63S/T 16383C)
<M4-CT064M4SSD2 0309> ATA-9 SATA 3.x device
600.000MB/s transfers (SATA 3.x, UDMA5, PIO 8192bytes)
# diskinfo -c -t ada1
ada1
        512             # sectorsize
        64023257088     # mediasize in bytes (59G)
        125045424       # mediasize in sectors
        0               # stripesize
        0               # stripeoffset
        124053          # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        0000000012040903906D    # Disk ident.

I/O command overhead:
        time to read 10MB block      0.025089 sec       =    0.001 msec/sector
        time to read 20480 sectors   2.586625 sec       =    0.126 msec/sector
        calculated command overhead                     =    0.125 msec/sector

Seek times:
        Full stroke:      250 iter in   0.023385 sec =    0.094 msec
        Half stroke:      250 iter in   0.022136 sec =    0.089 msec
        Quarter stroke:   500 iter in   0.046318 sec =    0.093 msec
        Short forward:    400 iter in   0.021267 sec =    0.053 msec
        Short backward:   400 iter in   0.024207 sec =    0.061 msec
        Seq outer:       2048 iter in   0.085891 sec =    0.042 msec
        Seq inner:       2048 iter in   0.083071 sec =    0.041 msec
Transfer rates:
        outside:       102400 kbytes in   0.234245 sec =   437149 kbytes/sec
        middle:        102400 kbytes in   0.244598 sec =   418646 kbytes/sec
        inside:        102400 kbytes in   0.244301 sec =   419155 kbytes/sec
Intel SSD preference
FreeBSD 9.0-RELEASE on a Intel i7-3770 Intel 60GB SSD
57241MB (117231408 512 byte sectors: 16H 63S/T 16383C)
<INTEL SSDSC2CT060A3 300i> ATA-9 SATA 3.x device
600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
# diskinfo -c -t ada0
ada0
        512             # sectorsize
        60022480896     # mediasize in bytes (55G)
        117231408       # mediasize in sectors
        0               # stripesize
        0               # stripeoffset
        116301          # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        CVMP244201EL060AGN      # Disk ident.

I/O command overhead:
        time to read 10MB block      0.037665 sec       =    0.002 msec/sector
        time to read 20480 sectors   1.021471 sec       =    0.050 msec/sector
        calculated command overhead                     =    0.048 msec/sector

Seek times:
        Full stroke:      250 iter in   0.037686 sec =    0.151 msec
        Half stroke:      250 iter in   0.028780 sec =    0.115 msec
        Quarter stroke:   500 iter in   0.022012 sec =    0.044 msec
        Short forward:    400 iter in   0.018321 sec =    0.046 msec
        Short backward:   400 iter in   0.013554 sec =    0.034 msec
        Seq outer:       2048 iter in   0.112006 sec =    0.055 msec
        Seq inner:       2048 iter in   0.100825 sec =    0.049 msec
Transfer rates:
        outside:       102400 kbytes in   0.351457 sec =   291359 kbytes/sec
        middle:        102400 kbytes in   0.234319 sec =   437011 kbytes/sec
        inside:        102400 kbytes in   0.343096 sec =   298459 kbytes/sec

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