Test disk read write speed on linux CLI

Test Disk Write Performance With dd Command

dd is a basic command une in all linux distributions to copy data. You can also use this feature to test dis performance.

Syntax

dd if=/dev/zero of=/path/to/output.file  bs=BLOCK-SIZE  count=NUMBER-OK-BLOCKS  oflag=dsync

Examples

dd if=/dev/zero of=./test.img bs=1G count=1 oflag=dsync

dd if=/dev/zero of=./test.img bs=64M count=1 oflag=dsync

dd if=/dev/zero of=./test.img bs=1M count=256 conv=fdatasync

dd if=/dev/zero of=./test.img bs=8k count=10k

dd if=/dev/zero of=./test.img bs=512 count=1000 oflag=dsync

## OR alternate syntax for GNU/dd ##

dd if=/dev/zero of=./test.img bs=1G count=1 conv=fdatasync

Do not forget to delete created file

Test Disk Read Performance With dd Command

Syntax

dd if=/path/to/input.file of=/dev/null bs=1M count=1024

Examples

dd if=./test.img of=/dev/null bs=1M count=1024

dd if=./test.img of=/dev/null bs=1G count=1