Linux 101 : Disks usage and performance, and the swap space - fd, swapon, hdparm, ...
We could use the below command to change hard drives parameters and also view their performance:
-t : gives us the times for the hard drive read operations
-T : gives us the times for the hard drive read operations from the cache, the results are related to the buffer without accessing the hard drive.
The lsblk tool:
The lsblk tool gives us information about block devices.
Block devices allow reading or writing in blocks, like hard drives for example:
Listing mount points with "df":
We could use the "df" utility to list the mountpoints on a system:
For more readable output, we could use the "-h" option:
The swap space is used as a "helper" for the RAM, when it gets full.
To display the swap space (partition), we use the below command: