What would a Firefox tab that you aren't reading be doing with 100% of the
CPU? This indicates animation that isn't stopped when you aren't looking at
it, long-running javascript, perhaps something pernicious like a crypto
miner, and sometimes these things can hide in a service worker. Further
inspection is in order.

    Thanks

    Bruce

On Sat, Jan 11, 2025 at 2:13 PM Joel Roth via Dng <dng@???>
wrote:

> Jan 09, 2025 at 11:37:41AM -1000, Joel Roth via Dng wrote:
> > Marc Petit-Huguenin wrote:
> > > On 1/9/25 1:05 PM, Joel Roth via Dng wrote:
> > > > Hi List,
> > > >
> > > > I've been happy with FF, mainly due to there being a wide
> > > > variety of plugins for ad and tracker blocking and various
> > > > other purposes.
> > > >
> > > > One gripe is that as I open more tabs, FF begins to use all
> > > > of my CPU.
> > > >
> > > > Periodically I have to kill and restart it. That works okay,
> > > > but it seems like the type of manual fi-diddling I'd prefer to
> avoid.
> > > >
> > > > I'd consider switching to another browser with a sufficient
> > > > plugin ecosystem.
> > > >
> > > > I've also thought of writing some utility to watch FF and
> > > > popup a window prompting "FF CPU high usage alert! Kill and restart?"
> > > >
> > > > Do other people have this issue? How do you deal with it?
> > > >
> > > > Thanks!!
> > >
> > >
> > > The “about:processes” URL brings a page with the memory and CPU usage
> for each process. With that, it is easy to close and reopen the offending
> tab (which in 99% of the cases is LinkedIn).
> >
> > That will do it, thanks!!
>
> This seems like it should help, but with FF slowing down to
> a crawl, I noticed that 'top' was showing several FF related
> processes at 100%, while in the about:processes tab, the
> total was about 60% and individual tabs less than 1%. Not
> obvious which to close.
>
> So -- at least on my system -- about:processes does not
> seem especially useful.
>
> --
> Joel Roth
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--
Bruce Perens K6BP