Linux下硬盘测试和测速

 Linux下硬盘测试和测速

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[root@localhost FCsan]# time dd if=/dev/zero bs=1024 count=1000000 of=/FCsan/1Gb.file

（在空介质生成一个1Gb文件用于测试）

Device Boot Start End Blocks Id System
/dev/sdb1 1 267350 2147483647+ ee EFI GPT
[root@localhost /]# time dd if=/dev/zero bs=1024 count=1000000 of=/FCsan/1Gb.file
1000000+0 records in
1000000+0 records out
1024000000 bytes (1.0 GB) copied, 3.2225 seconds, 318 MB/s
real 0m3.514s
user 0m0.191s
sys 0m2.846s

 

[root@localhost FCsan]# time dd if=/FCsan/1Gb.file bs=64k |dd of=/dev/null

（将1g文件复制到空介质，测试读性能）

 

 

[root@localhost /]# time dd if=/FCsan/1Gb.file bs=64k |dd of=/dev/null
15625+0 records in
15625+0 records out
1024000000 bytes (1.0 GB) copied, 2.65249 seconds, 386 MB/s
2000000+0 records in
2000000+0 records out
1024000000 bytes (1.0 GB) copied, 2.65263 seconds, 386 MB/s

real    0m2.654s
user    0m0.162s
sys     0m2.541s