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Firefox becomes slow after a couple of weeks open (bugzilla.mozilla.org)

submitted 5 days ago by [email protected] to c/[email protected]

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Does anyone have this issue were firefox becomes slow if left open for a long time. In my case after a couple of weeks rendering becomes slow and when I use youtube for example if is laggy, just trying to change volume taka few second to show the volume bar. It also happens to my laptop at work. I have around 30 tabs open.

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[–] donuts 13 points 5 days ago* (last edited 5 days ago) (3 children)

If it's related to the thread you posted then try Nightly?

That's only in Nightly right now, unfortunately; it won't make it out to Release until v134.

Also, can I ask why you'd leave your browser open for weeks? Just curious of the use case. The thread mentions having 5700-7000 open tabs, and I can't fathom why someone would do that. It's not like the websites disappear if you close the tab. Nothing to do with the problem though, you don't have to answer.

[–] [email protected] 10 points 5 days ago

some people use tabs as bookmarks 🤷

[–] JubilantJaguar 4 points 5 days ago (2 children)

Also, can I ask why you’d leave your browser open for weeks?

This just begs the question, Why do you not leave it open?

[–] donuts 13 points 5 days ago (1 children)

To conserve resources / power? Like when I'm done using an app, I close it. When I'm done reading a website or using online banking, I close it. I don't leave my email, games or music open after I'm doing using them either. I actually turn off / sleep my entire device when I'm done using it, but that's not what my curiosity is about.

[–] JubilantJaguar 2 points 5 days ago

Sure. Personally I just close the tabs, tho.

[–] [email protected] 5 points 5 days ago (1 children)

Maybe because the software is designed to make that very practical and smooth. You also might point to hardware limitations, should you have a machine that doesn't have a lot of RAM, or perhaps you might point to simplicity, and that you don't want to have a cluttered taskbar.

But it's kind of ironic that you would ask why not leave software open on a post where the problem was specifically mentioned as one that is solved by closing the software.

[–] JubilantJaguar 1 points 5 days ago

So perhaps another anecdote is in order. I currently running three instances of Firefox (different profiles) on a low-end Celeron laptop. I don't usually shut them except sometimes by mistake. What I do do is close tabs, if only for simplicity's sake (because idle tabs are unloaded from memory anyway). I'm experiencing no sluggishness issues.

[–] [email protected] 3 points 5 days ago (2 children)

I only have around 30 open and I don't turn off the laptop, after a while firefox becomes sluggish and I have to restart it.

[–] [email protected] 5 points 5 days ago (1 children)

Have you tested with specific websites? Could it be a tab has some have JavaScript running constantly that’s causing the issue?

[–] [email protected] 3 points 5 days ago

I haven't tested it at my home laptops, but my work laptop all tabs become slow. I have to restart it every time.

[–] donuts 2 points 5 days ago (1 children)

You should try that nightly build for troubleshooting purposes

[–] [email protected] 5 points 5 days ago

Also, because it forces you to restart the browser every night.