Iotop Disk I/O Monitoring Tool for Linux

Iotop is a free open source disk I/O monitoring command-line system administrator utility for Linux. Using this tool you can trace the specific process that may causing a high disk I/O read/writes. Because it provides option to monitor Linux Disk I/O usage details. It is based on Python and released under GNU GPL license. You can view all I/O utilization by process or threads on your system.

iotop

Install Iotop on Ubuntu

Iotop is available in Ubuntu default repositories. So you can install it from the command-line terminal application. Open the terminal application (ctrl+alt+t) and run below two commands one by one.

sudo apt update
sudo apt install iotop

The Linux kernel interfaces that iotop relies on now require root privileges or the NET_ADMIN capability. So after the iotop installation run below command to start it.

sudo iotop

It will show all running processes along with information about their current disk I/O usage details.

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If you want to show the current processes or threads actually doing I/O only, then run this command.

sudo iotop --only

For the complete usage details run,

man iotop

That’s it.

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