Bruce Perens wrote:
> 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.

I tend to accumulate tabs with stopped, partly played
videos, and I'm guessing that somehow the video player
library begins to consume CPU.

It is interesting that the 100% processes appearing in top
output don't show up in the FF about:processes tab.

--
Joel Roth