Linux - hdparm - тестирование скорости чтения с диска

Перед тестами - обязательно отключить работающее ПО nginx/apache/mysql:

# hdparm -tT /dev/sda1
/dev/sda1:
Timing cached reads: 21784 MB in 1.99 seconds = 10935.43 MB/sec
Timing buffered disk reads: 512 MB in 1.29 seconds = 395.44 MB/sec

# hdparm -tT /dev/sdb1
/dev/sdb1:
Timing cached reads: 22428 MB in 1.99 seconds = 11260.10 MB/sec
Timing buffered disk reads: 512 MB in 1.20 seconds = 427.29 MB/sec