Firefox (on windows) constantly consuming 10% CPU - is there an add-in to find the rogue tab? [duplicate]

Solution 1:

I often have many Firefox windows open, each with many tabs.

It's normal behavior to have some CPU (and a lot of memory) usage when having a lot of tabs...

If you suspect too much, check for dynamic content on the web page, whether it's Javascript, Java or Flash.

Some examples:

  • Advertisements
  • Animations
  • Auto-refreshing behavior
  • Chat message queries
  • Multimedia
  • Tickers