According to the project’s website, Atop is “an ASCII full-screen performance monitor for Linux that is capable of reporting the activity of all processes”.

Likewise, Atop allows you to monitor in real time the consumption of memory, CPU, swap and other computer resources. And using the netatop kernel module you can monitor networks as well.

So, Atop stands out for being light, fast and presenting an easy to manipulate interface. It also has the following features:

• Resource consumption by all processes.
• Utilization of all relevant resources.
• Permanent logging of resource utilization.
• Highlight critical resources

And many more features.

So, let’s install it on OpenSUSE 15.1.

Install and use atop on OpenSUSE 15.1

Atop is located in the OpenSUSE monitoring repository which makes it fairly easy to install. But first we must add the repository.

So open a terminal session and run the following command:

:~$ sudo zypper ar http://download.opensuse.org/repositories/server:/monitoring/openSUSE_Leap_15.1/ monitoring

After it is added correctly, it has to be reprioritized so that we don’t have problems installing it.

:~$ sudo zypper mr -p 70 monitoring

After that, we will have to refresh all OpenSUSE repositories.

:~$ sudo zypper refresh

Remember that the first time you use this repository, it will ask you to accept the GPG key of the repository. To do this, press the a key.

Finally, install atop on OpenSUSE using the following command:

:~$ sudo zypper in atop

Now we can use it.

Basic use of atop on OpenSUSE 15.1

Remember that the application interface is only for the terminal, so to launch it you just need to use the atop command.

:~$ atop

So, this is the default screen.

As I said before, atop is very easy to use. You only need to type a key to activate its features or its different views. Of course, which are they? Well, by pressing the h key, we will enter the help screen that will show them.

There you will have everything you can do with atop. Everything very simple, for example, I’m going to try the statistics of memory consumption. To do this I press the m key.

So, enjoy it.

Conclusion

To monitor systems there are many different applications, but atop is consolidated as a fast and stable alternative to do it. It is highly recommended to have it at hand in servers and even in a personal computer.

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