iotop

Display a table of current I/O usage by processes or threads. More information: https://manned.org/iotop.

Start top-like I/O monitor:

sudo iotop
Show only processes or threads actually doing I/O:

sudo iotop --only
Show I/O usage in non-interactive mode:

sudo iotop --batch
Show only I/O usage of processes (default is to show all threads):

sudo iotop --processes
Show I/O usage of given PID(s):

sudo iotop --pid={{PID}}
Show I/O usage of a given user:

sudo iotop --user={{user}}
Show accumulated I/O instead of bandwidth:

sudo iotop --accumulated