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zencitta / 261854162

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dd test disk performance #26

Open zencitta opened 7 years ago

zencitta commented 7 years ago

Write performance

dd if=/dev/zero of=file_1GB bs=1024 count=1M

sd class 4: 1000000+0 records in 1000000+0 records out 1024000000 bytes (1.0 GB) copied, 193.833 s, 5.3 MB/s

sd class 10: 1048576+0 records in 1048576+0 records out 1073741824 bytes (1.1 GB) copied, 93.1234 s, 11.5 MB/s

dd if=/dev/zero of=test.dbf bs=1M count=1024

sd class 4: 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 217.493 s, 4.9 MB/s

sd class 10: 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 85.8086 s, 12.5 MB/s

read performance

dd if=test.dbf of=/dev/null bs=1M

sd class 4: 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 45.8064 s, 23.4 MB/s

sd class 10: 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 47.4116 s, 22.6 MB/s