Arch Linux

mytArch

Member

Registered: 2024-11-16

Posts: 70

Firefox periodically a little erratic

I tend to have around 20+ tabs open.
If I have a session for more than a few hours (usually a few suspends in there) Firefox gets erratic (can't close tabs by clicking x, tabs get unresponsive).
Sometimes looks like a desktop issue - not able to swap between apps by clicking on the open icons at the bottom, system just sludgy in general.
Not happening at the moment.
Been happening intermittently for a while (a few months perhaps).
Mostly update everything daily, only install pacman apps (and Texlive 2025).
Thoughts?
Edit: I'm wondering if there's a memory leak.
With 64 Gb ram, 20+ tabs shouldn't be a problem.
Nothing else that's very system hungry open (a few emacs, a few kwrite, dolphin, konsole w. some light intermitent latex use).

Last edited by mytArch (2025-06-06 00:16:09)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,277

Re: Firefox periodically a little erratic

Edit: I'm wondering if there's a memory leak.

A superficial "free -h"will tell, you can also monitor [b,h]top in case it's the CPU.
Also: wayland or X11? Does FF run as native wayland client or on xwayland?

Anecdotal datapoint: I've occasionally noticed input loss on FF (no ressouce pressure involved) but accounted it to maybe a bug in the WM not passing on mouse and focus or firefox input handling.
(This was rare and on a completely changed environment because I forever wanted to play w/ awesomewm and I've not used FF in a long while before - so I cannot ballpark the cause and didn't bother to investigate, notably since I also frequently restarted the WM in the running session and the TE takes, but doesn't always indicate the focus)

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mytArch

Member

Registered: 2024-11-16

Posts: 70

Re: Firefox periodically a little erratic

Edit: I'm wondering if there's a memory leak.

A superficial "free -h"will tell, you can also monitor [b,h]top in case it's the CPU.
Also: wayland or X11? Does FF run as native wayland client or on xwayland?

wayland, FF runs as native wayland.
I'll have a look at "free -h" next time.
Thanks.