测试磁盘的IO写速度
[root@45-113-120-78 home]# time dd if=/dev/zero of=/test.dbf bs=8k count=300000
300000+0 records in
300000+0 records out
2457600000 bytes (2.5 GB) copied, 1.13061 s, 2.2 GB/s
real 0m1.132s
user 0m0.023s
sys 0m1.105s
测试磁盘的IO读速度
[root@45-113-120-78 home]# time dd if=/home/test of=/dev/null bs=8k
128000+0 records in
128000+0 records out
1048576000 bytes (1.0 GB) copied, 0.201303 s, 5.2 GB/s
real 0m0.204s
user 0m0.011s
sys 0m0.193s
磁盘读写速度
[root@45-113-120-78 home]#yum -y install hdparm
[root@45-113-120-78 home]# hdparm -Tt /dev/vda
/dev/vda:
Timing cached reads: 26894 MB in 2.00 seconds = 13462.99 MB/sec
Timing buffered disk reads: 566 MB in 3.00 seconds = 188.60 MB/sec