The Linux 'OOM Killer' is Crashing Your System: How to Optimize Your Swap in 2026

Your system freezes. Apps suddenly close. The screen locks up — and you blame Linux. But what if the real culprit is the OOM Killer? In 2026, modern Linux desktops are more powerful than ever — but memory management still makes or breaks your experience. If your swap is misconfigured, too small, or outdated, the Linux OOM (Out Of Memory) Killer can start terminating processes to save the system… and sometimes it kills the wrong ones. In this video, I explain what the OOM Killer actually does, why it activates, and how to properly configure swap (swap file, swap partition, zRAM, swappiness, and more) to prevent crashes and improve stability. If your Linux machine slows down under heavy workloads, this is the optimization guide you need. In this video, you will learn: What the Linux OOM Killer really is (and why it’s not a bug). Why your system runs out of memory even with “free RAM” showing. The difference between Swap Partition, Swap File, and zRAM. How to adjust swappiness fo