Linux下各种主要文件系统的读写性能测试

写测试：

 

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CODE:

debian:/mnt/sda1# time dd if=/dev/zero of=test bs=1024 count=100K

102400+0 records in

102400+0 records out

104857600 bytes (105 MB) copied, 1.76025 seconds, 59.6 MB/s

 

real 0m2.000s

user 0m0.060s

sys 0m0.470s

 

读测试：

 

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CODE:

debian:/mnt/sda1# time cat test > /dev/null

 

real 0m2.203s

user 0m0.010s

sys 0m0.270s

 

6、JFS

写测试：

 

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CODE:

debian:/mnt/sda1# time dd if=/dev/zero of=test bs=1024 count=100K

102400+0 records in

102400+0 records out

104857600 bytes (105 MB) copied, 0.581869 seconds, 180 MB/s

 

real 0m0.613s

user 0m0.140s

sys 0m0.250s

 

读测试：

 

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CODE:

debian:/mnt/sda1# time cat test > /dev/null

 

real 0m0.579s

user 0m0.010s

sys 0m0.350s

 

JFS文件系统还真快

ext3文件系统下，如果设置为data=journal,效果要打不少折扣。