Process & Resource Monitoring (Top/Htop/Ps/Systemd)

Stop wasting time watching top flicker while chasing memory spikes

🧩 The Challenge

Trying to catch a process that spikes memory usage for a split second is a total nightmare because top refreshes too slowly. I’ve wasted hours sitting there staring at the screen waiting for a micro-burst to show up just so I could identify the culprit.

💡 The Fix

Use ps to print out the process list and sort by RSS memory usage in a loop, which lets you see the snapshot instantly without waiting for a UI refresh. It’s way better than trying to time your eyes with a default top update.

while true; do ps -eo pid,rss,cmd --sort -rss | head -n 10; sleep 1; clear; done

⚙️ Why It Works

This command forces the system to grab a fresh process snapshot every single second and dumps the top ten memory hogs directly to your terminal. By clearing the screen each time, you get a clean, readable dashboard that doesn’t suffer from the lag inherent in standard monitoring tools.

🚀 Pro-Tip: Swap out rss for %cpu in that ps command if you’re hunting down a runaway thread instead of a memory leak.

Linux Tips & Tricks | © ngelinux.com | 8/28/2026