Launch with active processes only: atop -a Launch with average-per-second total values: atop -1 Once installed on any distro, you can launch it similarly to top using: atopĪ good place to start would be to read the man pages: man atop Install atop on Debian/Ubuntu Linux apt install atop In addition, for each process and thread, you can analyze CPU utilization, memory consumption, disk I/O, priority, username, state, and even exit codes.įirst, install and enable EPEL (Extra Packages for Enterprise Linux) repo.

Once atop is launched, by default, it will show system activity for CPU, memory, swap, disks, and network in 10-second intervals.

Uses netatop kernel module to monitor TCP & UDP and network bandwidth.

Includes disk I/O and network utilization.

Will add or remove columns as the size of the display window changes.

Highlights critical resources using colors (red).

Accumulates resource usage for all processes and users with the same name.

Monitors threads within processes & ignores unused processes.

Shows resource usage of ALL processes, even those that are closed/completed.

One feature I really like is that atop will stay active in the background for long-term server analysis (up to 28 days by default). Atop is an ASCII full-screen performance monitor which can log and report the activity of all server processes.

See cpu usage ubuntu