Linux 磁碟读写速度测试

测试磁碟的 IO 写速度 [root@45-113-120-78 home]# time dd if=/dev/zero of=/test.dbf bs=8k count=300000300000+0 records in300000+0 records out2457600000 bytes (2.5 GB) copied, 1.13061 s, 2.2 GB/s
real    0m1.132suser    0m0.023ssys     0m1.105s
 
测试磁碟的 IO 读速度 [root@45-113-120-78 home]# time dd if=/home/test of=/dev/null bs=8k128000+0 records in128000+0 records out1048576000 bytes (1.0 GB) copied, 0.201303 s, 5.2 GB/s
real    0m0.204suser    0m0.011ssys     0m0.193s
磁碟读写速度
[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