HOW TO : Check IO speed on a Linux Machine

For my notes.. if you ever want to check the IO capability of a disk (local or network) on a linux machine, use the following command

[bash] dd if=/dev/zero of=test.file bs=4M count=1000 [/bash]

The above command make a copy of the output from /dev/zero to a file called test.file (you can locate the file on the disk you want to measure) with a block size of 4M for a total file size of 4000Mb.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.