#hdparm -tT /dev/sda
#hdparm -I /dev/sda
create test file on the disk
#dd if=/dev/zero of=/home/file.img bs=8k count=256
measuring performance
#iotop -b -n 1 -o
#cat /proc/slabinfo
Before start new test, restart system or clear disk caches
#sync; echo 3 > /proc/sys/vm/drop_caches
#sync; echo 0 > /proc/sys/vm/drop_caches
http://www.linuxinsight.com/proc_sys_vm_drop_caches.html
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