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Firefox 54.0, 4 tabs open, all add-ons disabled, using 1013MB memory.

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Firefox 54 is consuming a tremendous amount of memory. I have 4 open tabs, all add-ons disabled and am using 1013MB of memory. Performance has become exceptionally slow with frequent "Not Responding" conditions. I have read many of the suggestions but they do not seem to fit my situation. I have also tried restarting frequently but memory use increases dramatically each time.

Firefox 54 is consuming a tremendous amount of memory. I have 4 open tabs, all add-ons disabled and am using 1013MB of memory. Performance has become exceptionally slow with frequent "Not Responding" conditions. I have read many of the suggestions but they do not seem to fit my situation. I have also tried restarting frequently but memory use increases dramatically each time.

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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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check about:memory

on my potato firefox 54 (linux64 mozilla binary) is using 600mb with 10tabs atm

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Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window