纯写速度测试:
[root@6t ~]# time dd if=/dev/zero of=/var/test bs=8k count=1000000
1000000+0 records in
1000000+0 records out
8192000000 bytes (8.2 GB) copied, 4.93558 s,
1.7 GB/s
real 0m4.938s
user 0m0.113s
sys 0m4.783s
读的速度:
[root@6t ~]# time dd if=/var/test of=/dev/null bs=8k count=1000000
\1000000+0 records in
1000000+0 records out
8192000000 bytes (8.2 GB) copied, 1.23705 s,
6.6 GB/s