Comment by Aurornis
6 hours ago
> macOS 15 uses ~5GB on startup without any app open. I'd be swapping all the time on 8GB of RAM.
I have an older 8GB MacBook I use for testing. It’s actually fine for normal use with a web browser, Visual Studio Code, Slack, and Spotify running. You’d think it would be an unusable mess from the way some people talk about RAM, but modern OSes are good and swapping lesser used things to the SSD is fast.
Your OS may show 5GB used, but that doesn’t mean all 5GB need to be active in RAM all the time. Letting the OS swap rarely used things out to the SSD is fine.
I'm using a (fairly crappy) HP laptop with 16 gig, running Linux.
I find that the combination of FireFox and Visual Studio gets to the point where it fills up to the point where things get killed (with swap filled as well).
Mate system monitor hilariously reports code using 71MB and firefox-bin using 1.1GB because it has a tree view that doesn't show the usage of collapsed nodes beneath it.
Using smem shows each using multi GB and at my current level I've got 6GB of cache to eat up before it kills code again. Ordering by size Ghostty is the first thing that is not firefox or code at 78MB total. (and about 1GB of non-cache kernel use) . So essentially it's only those two apps that are the problem. Can Macs get by simply because Safari is better with RAM?
> Letting the OS swap rarely used things out to the SSD is fine.
if this is the philisophy of osx and apple in general i dare not ask followup questions :)