Subtract cached and free from total to get actual usage
Htop shows visually though with cached as yellow or so
I think you are using about 30 gb ram.
Honestly, apart from firefox, what are you running? Does that include vms?
I have 8GiB ram(7.1 usable) and uses like 1.8gb on idle and about 5-6.5gb on my personal highest usage
No VMs. The RAM usage kept climbing until I was crashed out to the login screen and lost everything that was open. It seemed to be a particular website that gobbled RAM.
It sure does. I've never cracked 30GB RAM before. The site is doing something weird, for sure. Though I feel like Firefox should catch this before the OS crashes.
The RAM use kept growing until it locked up and I got booted back to the login screen, losing everything unsaved. Now it's back to normal but when I run free -m the numbers match what's in the GUI.
I'm pretty sure the culprit was a website for uploading photos for printing. Something odd about it, I did upload 1,000 photos at about 2GB total, but it was sucking up RAM Like crazy. Firefox was using some fifty-something GB of RAM.