你的磁盘有多快？

Sequential access

sudo hdparm -t /dev/hda

/dev/hda:
Timing buffered disk reads:  144 MB in  3.02 seconds =  47.68 MB/sec


 

 

Random access

 

gcc -O2 seeker.c -o seeker

sudo seeker /dev/sda

 

Seeker v2.0, 2007-01-15, http://www.linuxinsight.com/how_fast_is_your_disk.html
Benchmarking /dev/sda [76293MB], wait 30 seconds..............................
Results: 70 seeks/second, 14.17 ms random access time