Testing the hard disk for reading / writing in Centos 7

Checking disk read speed

To check the reading speed, we need a utility hdparm, install it

[[email protected]]# yum -y install hdparm

See the list of sections

[[email protected]]# fdisk -l

Disk /dev/sda: 2000.4 GB, 2000398934016 bytes, 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x000d428d

Устр-во Загр     Начало       Конец       Блоки   Id  Система
/dev/sda1   *        2048      526335      262144   83  Linux
/dev/sda2          526336     4720639     2097152   82  Linux swap / Solaris
/dev/sda3         4720640  3907028991  1951154176   83  Linux

Select a partition, for example / dev / sda3, and check the read speed

[[email protected]]# hdparm -t /dev/sda3

/dev/sda3:
 Timing buffered disk reads: 566 MB in  3.00 seconds = 188.35 MB/sec

Checking the disc writing speed

To check the write speed, we will use the standard utility ddCreate a 1 Gb file in 1 Mb portions, run this test several times

[[email protected]]# sync; dd if=/dev/zero of=/opt/tempfile bs=1M count=1024; sync
1024+0 записей получено
1024+0 записей отправлено
 скопировано 1073741824 байта (1,1 GB), 7,77424 c, 138 MB/c
[[email protected]]# sync; dd if=/dev/zero of=/opt/tempfile bs=1M count=1024; sync
1024+0 записей получено
1024+0 записей отправлено
 скопировано 1073741824 байта (1,1 GB), 7,84737 c, 137 MB/c
[[email protected]]# sync; dd if=/dev/zero of=/opt/tempfile bs=1M count=1024; sync
1024+0 записей получено
1024+0 записей отправлено
 скопировано 1073741824 байта (1,1 GB), 7,9069 c, 136 MB/c
[[email protected]]# sync; dd if=/dev/zero of=/opt/tempfile bs=1M count=1024; sync
1024+0 записей получено
1024+0 записей отправлено
 скопировано 1073741824 байта (1,1 GB), 7,86588 c, 137 MB/c
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