Ubuntu Raid效能測試

單一硬碟效能

hdparm -Tt /dev/sda

/dev/sda:

Timing cached reads: 2078 MB in 2.00 seconds = 1038.86 MB/sec

Timing buffered disk reads: 164 MB in 3.01 seconds = 54.46 MB/sec

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有raid0使用2顆硬碟

#hdparm -Tt /dev/md0

/dev/md0:

Timing cached reads: 2002 MB in 2.00 seconds = 1001.40 MB/sec

Timing buffered disk reads: 106 MB in 3.02 seconds = 35.05 MB/sec

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有raid0使用3顆硬碟

#hdparm -Tt /dev/md0

/dev/md0:

Timing cached reads: 2042 MB in 2.00 seconds = 1020.80 MB/sec

Timing buffered disk reads: 102 MB in 3.04 seconds = 33.54 MB/sec