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Why does Firefox use over 3 gigabytes of memory after only an hour's use?

Posted

Since I bought my iMac in 2013, Firefox's memory useage has been steadily increasing. I'm also aware that successive updates and suggested 'solutions' have failed to solve this problem. Firefox is rapidly becoming unusable for more than a few minutes at a time . . . My OS is a bit long in the tooth (10.6.8), and my version of Firefox is also out of date (48.0.2). But after years of promises to fix this problem, I wonder whether newer versions would be any better?

My new iMac, with High Sierra, arrives in a few days. I'd like to use Firefox, but wonder whether my experience of the past few years will be repeated all over again . . .

Since I bought my iMac in 2013, Firefox's memory useage has been steadily increasing. I'm also aware that successive updates and suggested 'solutions' have failed to solve this problem. Firefox is rapidly becoming unusable for more than a few minutes at a time . . . My OS is a bit long in the tooth (10.6.8), and my version of Firefox is also out of date (48.0.2). But after years of promises to fix this problem, I wonder whether newer versions would be any better? My new iMac, with High Sierra, arrives in a few days. I'd like to use Firefox, but wonder whether my experience of the past few years will be repeated all over again . . .

Additional System Details

Installed Plug-ins

  • Adobe® Acrobat® Plug-in for Web Browsers, Version 11.0.06
  • Amazon MP3 Downloader Plugin 1.0.17
  • The Flip4Mac WMV Plugin allows you to view Windows Media content using QuickTime.
  • The Google Earth Plugin allows you to view 3D imagery and terrain in your web browser.
  • Displays Java applet content, or a placeholder if Java is not installed.
  • Office Live Update v1.0
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 28.0 r0
  • 5.1.20125.0
  • iPhoto6

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:48.0) Gecko/20100101 Firefox/48.0

More Information

user1929 72 solutions 290 answers

I don't think anyone here can know the answer to that for sure; 48.0 was released over a year and a half ago, and Firefox has changed a lot in the meantime. If you see the same issues with the latest version, please create a new question here and we can help you figure it out.

I don't think anyone here can know the answer to that for sure; 48.0 was released over a year and a half ago, and Firefox has changed a lot in the meantime. If you see the same issues with the latest version, please create a new question here and we can help you figure it out.
cor-el
  • Top 10 Contributor
  • Moderator
17527 solutions 158477 answers

You can check the about:memory page for more information about what is using this memory.

You can open "about:" pages via the location/address bar

  • "about:" is a protocol to access special pages
You can check the about:memory page for more information about what is using this memory. You can open "<b>about:</b>" pages via the location/address bar *"about:" is a protocol to access special pages
James
  • Top 25 Contributor
  • Moderator
1598 solutions 11286 answers

DavidKidner said

My OS is a bit long in the tooth (10.6.8), and my version of Firefox is also out of date (48.0.2). But after years of promises to fix this problem, I wonder whether newer versions would be any better?

Newer Firefox versions will not run on that system. Firefox 48.0.2 Release and the 45.9.0esr were the last versions that still supported the old Mac OSX 10.6, 10.7. 10.8. Firefox versions from 53.0 to current requires OSX 10.9 or later.

https://support.mozilla.org/en-US/kb/firefox-osx - Firefox support has ended for Mac OS X 10.6, 10.7 and 10.8

Firefox 45.9.0esr will be the most up to date version with security fixes that will run on OS X 10.6, 10.7 and 10.8.

http://archive.mozilla.org/pub/firefox/releases/45.9.0esr/mac/ http://archive.mozilla.org/pub/firefox/releases/45.9.0esr/mac/en-US/

The Firefox 48.0.2 was released August 24, 2016 and is missing several security updates that the Firefox 45.9.0esr released on April 19, 2017 has.

''DavidKidner [[#question-1204715|said]]'' <blockquote> My OS is a bit long in the tooth (10.6.8), and my version of Firefox is also out of date (48.0.2). But after years of promises to fix this problem, I wonder whether newer versions would be any better? </blockquote> Newer Firefox versions will not run on that system. Firefox 48.0.2 Release and the 45.9.0esr were the last versions that still supported the old Mac OSX 10.6, 10.7. 10.8. Firefox versions from 53.0 to current requires OSX 10.9 or later. https://support.mozilla.org/en-US/kb/firefox-osx - Firefox support has ended for Mac OS X 10.6, 10.7 and 10.8 Firefox 45.9.0esr will be the most up to date version with security fixes that will run on OS X 10.6, 10.7 and 10.8. http://archive.mozilla.org/pub/firefox/releases/45.9.0esr/mac/ http://archive.mozilla.org/pub/firefox/releases/45.9.0esr/mac/en-US/ The Firefox 48.0.2 was released August 24, 2016 and is missing several security updates that the Firefox 45.9.0esr released on April 19, 2017 has.