Centos 测试合集

磁盘测试：

写速度

$dd if=/dev/zero bs=1k count=1000000 of=1Gb.file

1000000+0 records in
1000000+0 records out
1024000000 bytes (1.0 GB) copied, 5.13676 seconds, 199 MB/s

 读速度

$dd if=1Gb.file bs=64k |dd of=/dev/null

[haibo@localhost ~]$ dd if=1Gb.file bs=64k |dd of=/dev/null
15625+0 records in
15625+0 records out
1024000000 bytes (1.0 GB) copied, 6.37813 seconds, 161 MB/s
2000000+0 records in
2000000+0 records out
1024000000 bytes (1.0 GB) copied, 6.37891 seconds, 161 MB/s

 读写速度

$dd if=1Gb.file of=2Gb.file bs=64k

15625+0 records in
15625+0 records out
1024000000 bytes (1.0 GB) copied, 2.21364 seconds, 463 MB/、

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