Тест на скорость чтения винта.

[lm]

В общем, интересует... есть ли во фре аналог линуховой команды hdparm -Tt /dev/hdd , т.е. как узнать примерную скорость чтения ж.д.

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[Alex Keda]

Код: Выделить всё

/usr/home/lissyara/>dd if=/dev/ad0 of=/dev/null bs=1m count=100
100+0 records in
100+0 records out
104857600 bytes transferred in 1.725388 secs (60773343 bytes/sec)
/usr/home/lissyara/>

[Гость]

tnx

[dikens3]

SATA 150 на RAID-контроллере

Код: Выделить всё

# diskinfo -t /dev/amrd0
/dev/amrd0
        512             # sectorsize
        160036814848    # mediasize in bytes (149G)
        312571904       # mediasize in sectors
        19456           # Cylinders according to firmware.
        255             # Heads according to firmware.
        63              # Sectors according to firmware.

Seek times:
        Full stroke:      250 iter in   1.581309 sec =    6.325 msec
        Half stroke:      250 iter in   1.531269 sec =    6.125 msec
        Quarter stroke:   500 iter in   4.407249 sec =    8.814 msec
        Short forward:    400 iter in   1.696018 sec =    4.240 msec
        Short backward:   400 iter in   2.387744 sec =    5.969 msec
        Seq outer:       2048 iter in   0.695476 sec =    0.340 msec
        Seq inner:       2048 iter in   0.734191 sec =    0.358 msec
Transfer rates:
        outside:       102400 kbytes in   1.812832 sec =    56486 kbytes/sec
        middle:        102400 kbytes in   2.121919 sec =    48258 kbytes/sec
        inside:        102400 kbytes in   3.538687 sec =    28937 kbytes/sec

IDE какой-то 30GB

Код: Выделить всё

#diskinfo -t /dev/ad0
/dev/ad0
        512             # sectorsize
        30020272128     # mediasize in bytes (28G)
        58633344        # mediasize in sectors
        58168           # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.

Seek times:
        Full stroke:      250 iter in   6.925607 sec =   27.702 msec
        Half stroke:      250 iter in   5.210288 sec =   20.841 msec
        Quarter stroke:   500 iter in   8.691914 sec =   17.384 msec
        Short forward:    400 iter in   5.126321 sec =   12.816 msec
        Short backward:   400 iter in   4.038717 sec =   10.097 msec
        Seq outer:       2048 iter in   1.106794 sec =    0.540 msec
        Seq inner:       2048 iter in   0.219176 sec =    0.107 msec
Transfer rates:
        outside:       102400 kbytes in   4.900068 sec =    20898 kbytes/sec
        middle:        102400 kbytes in   5.556914 sec =    18427 kbytes/sec
        inside:        102400 kbytes in   8.640333 sec =    11851 kbytes/sec

[Alex Keda]

dd - форева! ))

[lm]

----

Код: Выделить всё

dd if=/dev/ad0 of=/dev/null bs=1m count=100
100+0 records in
100+0 records out
104857600 bytes transferred in 2.225568 secs (47114982 bytes/sec)

----

Код: Выделить всё

diskinfo -t /dev/ad0
/dev/ad0
        512             # sectorsize
        60022480896     # mediasize in bytes (56G)
        117231408       # mediasize in sectors
        116301          # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.

Seek times:
        Full stroke:      250 iter in   4.881435 sec =   19.526 msec
        Half stroke:      250 iter in   3.909084 sec =   15.636 msec
        Quarter stroke:   500 iter in   6.402066 sec =   12.804 msec
        Short forward:    400 iter in   2.777151 sec =    6.943 msec
        Short backward:   400 iter in   2.751293 sec =    6.878 msec
        Seq outer:       2048 iter in   0.258076 sec =    0.126 msec
        Seq inner:       2048 iter in   0.267350 sec =    0.131 msec
Transfer rates:
        outside:       102400 kbytes in   2.617804 sec =    39117 kbytes/sec
        middle:        102400 kbytes in   2.068608 sec =    49502 kbytes/sec
        inside:        102400 kbytes in   2.559604 sec =    40006 kbytes/sec

----
tnx

[Alex Keda]

не умничай.
прогони dd по всему диску

[lm]

не умничай.
прогони dd по всему диску

зачем ... не думаю, что скорость сильно уменьшится...