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