I'm really puzzled as to why my Fedora is taking up to 98% of my CPU. I've noticed that SELinux Troubleshooter often uses 60% of that, plus some background services are taking another 20%, and sometimes I see 18% of CPU usage attributed to 'nothing.' On top of that, it's using 2GB of memory! Can anyone explain what might be happening here?
4 Answers
It sounds like you're running into performance issues possibly linked to your hardware. Without knowing your PC specs, it's tough to provide an exact solution. Could you share what kind of CPU and RAM you're using? That way, we can better assess if hardware limitations might be causing the slow performance.
From what you described, SELinux could be a part of the problem. Have you looked into what exactly is spamming your CPU? Using 'strace' can help you determine if there’s a specific driver or service causing the issues. It could also be worth checking for updates or reinstalling problematic drivers.
I haven't updated my drivers yet. I’m having issues with my WiFi, so I’ll take care of that first and see if it makes a difference.
You might want to check what processes are running in the background. Try running 'htop' or 'top' in the terminal to see what's consuming your CPU. Sometimes, after a fresh install, there can be services you don’t necessarily need that might be running and hogging resources. Also, don’t forget that Linux uses memory differently; it often caches a lot for efficiency, which can make it look like a lot is being used, but that memory can quickly be repurposed when needed.
I just checked, and it seems most of the usage is from system services. I’ll try to disable a few and see if that helps.
If you're new to Linux, Fedora might not be the best starting point. It's powerful, but sometimes tricky to configure. If it feels overwhelming, consider trying Linux Mint, which is generally more user-friendly right out of the box. Just a thought!
I’m okay with putting in some effort, but I’m really looking for solutions to get Fedora running smoothly.

I have an i5-6200U with 8GB of RAM, and I meet the minimum requirements, so I don’t think it should be an issue.