Ram

Memory usage, diagnostics, and performance optimization.

Rising memory usage bars above a Linux log with a highlighted Killed process entry

Sep 30, 2026 • 9 min read • new

How to Diagnose OOM Killer Events in Linux

Diagnose Linux OOM kills with dmesg and journalctl, identify affected processes, check service memory limits, and investigate systemd-oomd events.

Sep 21, 2026 • 4 min read • series

Create a Linux Swap File

How to create and enable a swap file on Linux, configure swappiness, resize an existing swap file, and remove it when no longer needed.

Apr 27, 2026 • 6 min read

How to Add Swap Space on Ubuntu

This article explains how to add swap space on Ubuntu by creating, enabling, and persisting a swap file.

May 12, 2020 • 4 min read

How to Add Swap Space on Ubuntu 20.04

This tutorial explains how to add a swap file on Ubuntu 20.04 systems. Swap is a space on a disk that is used when the amount of physical RAM memory is full.

Feb 6, 2020 • 4 min read

How to Add Swap Space on Ubuntu 18.04

Swap is a space on a disk that is used when the amount of physical RAM memory is full. This tutorial covers the steps necessary to add a swap file to Ubuntu 18.04.

Dec 6, 2019 • 3 min read

How to Add Swap Space on CentOS 8

Swap is a space on a disk that is used when the amount of physical RAM memory is full. This article covers the steps for adding a swap file on CentOS 8 systems.

Jul 17, 2019 • 4 min read

How to Add Swap Space on Debian 10 Linux

Swap is a space on a disk that is used when the amount of physical memory is full. This tutorial will guide you through the steps of adding a swap file on Debian 10 Buster.

Feb 19, 2019 • 4 min read

How to Add Swap Space on Debian 9

Swap is a space on a disk that is used when the amount of physical RAM memory is full. This tutorial outlines the steps necessary to add a swap file on Debian 9 systems.

Feb 19, 2019 • 4 min read

How to Add Swap Space on CentOS 7

Swap is a space on a disk that is used when the amount of physical RAM memory is full. This tutorial explains how to add a swap file on CentOS 7 systems.