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I have as many as 6 firefox processes running in the background no matter how many time I try to reconfig the amount. Count = 1, but 6 open up. How can I fix?

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I have 6 firefox processes running in the background that are really slowing down my computer. I have tried to change with 'about config', setting it to 1; but 6 still open up after restart. How can I fix this?

I have 6 firefox processes running in the background that are really slowing down my computer. I have tried to change with 'about config', setting it to 1; but 6 still open up after restart. How can I fix this?

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More than one process is normal for the current Firefox. http://www.ghacks.net/2016/07/22/multi-process-firefox/

Multi-process Firefox is codenamed "e10s". https://wiki.mozilla.org/Firefox/multiprocess


Try to disable multi-process tabs in Firefox. You can disable multi-process tabs in Firefox by setting the related prefs to false on the about:config page.

browser.tabs.remote.autostart = false browser.tabs.remote.autostart.2 = false

http://www.ghacks.net/2016/07/22/multi-process-firefox/

Type about:config<enter> in the address bar. If a warning screen comes up, press the Be Careful button. At the top of the screen is a search bar.

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You may see three or more Firefox processes running.

  • one process for the main Firefox thread (user interface)
  • one or more processes for content threads set via "Options/Preferences -> General -> Performance" (dom.ipc.processCount)
  • one process for the compositor thread (Windows)

You can look at "Multiprocess Windows" to see the current multi-process state.

  • "Help -> Troubleshooting Information" -> Application Basics: Multiprocess Windows

See also: