SSD硬盘与7200转机械硬盘速度对比

1、dd部分

[root@node1 ~]# free -g

total used free shared buffers cached

Mem: 7 0 6 0 0 0

-/+ buffers/cache: 0 7

Swap: 3 0 3

[root@node1 ~]# ls /dev/sd

sda sda1 sda2 sda5 sda6 sda7 sda8 sdb sdb1

[root@node1 ~]# dd if=/dev/sda8 of=/dev/null bs=1M count=1024

1024+0 records in

1024+0 records out

1073741824 bytes (1.1 GB) copied, 13.4692 seconds, 79.7 MB/s

[root@node1 ~]# dd if=/dev/sdb1 of=/dev/null bs=1M count=1024

1024+0 records in

1024+0 records out

1073741824 bytes (1.1 GB) copied, 5.31813 seconds, 202 MB/s

[root@node1 ~]#

[root@node1 ~]# ntfs-3g /dev/sdb1 /mnt/

[root@node1 ~]# dd if=/dev/zero of=/public/testio bs=1M count=1024

1024+0 records in

1024+0 records out

1073741824 bytes (1.1 GB) copied, 4.71554 seconds, 228 MB/s

[root@node1 ~]# dd if=/dev/zero of=/mnt/testio bs=1M count=1024

1024+0 records in

1024+0 records out

1073741824 bytes (1.1 GB) copied, 10.6446 seconds, 101 MB/s

[root@node1 ~]# dd if=/public/testio of=/dev/null bs=1M count=1024

1024+0 records in

1024+0 records out

1073741824 bytes (1.1 GB) copied, 0.299819 seconds, 3.6 GB/s

[root@node1 ~]# dd if=/mnt/testio of=/dev/null bs=1M count=1024

1024+0 records in

1024+0 records out

1073741824 bytes (1.1 GB) copied, 0.312793 seconds, 3.4 GB/s

[root@node1 ~]# dd if=/dev/sda1 of=/dev/null bs=1M count=1024

1024+0 records in

1024+0 records out

1073741824 bytes (1.1 GB) copied, 8.29744 seconds, 129 MB/s

[root@node1 ~]# dd if=/dev/sda1 of=/dev/null bs=512 count=1024

1024+0 records in

1024+0 records out

524288 bytes (524 kB) copied, 0.002299 seconds, 228 MB/s

[root@node1 ~]# dd if=/dev/sda1 of=/dev/null bs=32 count=1024

1024+0 records in

1024+0 records out

32768 bytes (33 kB) copied, 0.002133 seconds, 15.4 MB/s

[root@node1 ~]# dd if=/dev/sdb1 of=/dev/null bs=1M count=1024

1024+0 records in

1024+0 records out

1073741824 bytes (1.1 GB) copied, 5.18208 seconds, 207 MB/s

[root@node1 ~]# dd if=/dev/sdb1 of=/dev/null bs=512 count=1024

1024+0 records in

1024+0 records out

524288 bytes (524 kB) copied, 0.002285 seconds, 229 MB/s

[root@node1 ~]# dd if=/dev/sdb1 of=/dev/null bs=32 count=1024

1024+0 records in

1024+0 records out

32768 bytes (33 kB) copied, 0.002199 seconds, 14.9 MB/s

[root@node1 ~]#

2、软件测试部分