BS.

Currently browsing HN, Google groups, Gitlab x2.

Extensions enabled:

Bypass paywall, Decentraleyes, Youtube enhancer, Facebook containers, Flagfox, Google container, HTTPS everywhere, Location guard, Sponsorblock and Ublock Origin

Only using a few hundred MB atm:

https://imgur.com/i6DYG69

That's nice. Here's 9GB resident[0] per htop. (Dev edition, four windows -- just under 50 tabs.)

Interestingly, about:performance informs me that the highest single process is a Facebook tab taking 174MB[1], followed by Gmail at 166MB, and only shows total memory usage maybe 3GB. Activity Monitor output looks closer to htop, but shows, e.g., that pid 13691 (top one) as 2.52GB rather than 1.3GB.

Web browsers are complicated, and when someone says "[browser] is using xxx memory on my computer", pointing out that it isn't on yours is in no way a refutation.

At any rate, I've got a lot of memory, and Firefox uses a bunch of it. Sometimes this causes issues, but I also had similar issues in Chrome. (And with vscode. And with Docker. And, to a lesser extent, Slack.) I welcome perf gains on cpu, memory, and subjective responsiveness. All of these matter to me.

[0] https://i.imgur.com/qYnkQuX.png

[1] Note: In the few minutes while I was writing this post, that FB tab rose to 215MB on about:performance, without me switching to it.

You're responding to something I didn't say. GP was talking about memory usage with 500 tabs, with which Firefox will absolutely eat some RAM. Right now I have 200 and it's using 6.3gb.