it is because you have too many tabs open on your browser and clear cache and history

it is because you have too many tabs open on your browser and clear cache and history

my firefox usually runs with 1.5-2.0 gb of ram, with all these tabs, and even more. but when i open the microsoft site i mentioned in my first message, the browser starts to freeze, and the memory starts to grow, and grow, without a limit. i need to kill the process or else the ram just continues to grow. i made the screenshot at 20GB because i was near the limit of my ram, and i didn't want my pc to actually crash. but the ram was growing indefinitely.

A few websites cause unusually high memory usage for me also, some consistently some intermittently. If you open about:memory, it has buttons to clear collections and reduce memory usage. I use those at times. Sometimes I have to close a tab, wait and reopen it. This article may shed some light.

https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-or-cpu-resources

A few websites cause unusually high memory usage for me also, some consistently some intermittently. If you open about:memory, it has buttons to clear collections and reduce memory usage. I use those at times. Sometimes I have to close a tab, wait and reopen it. This article may shed some light. https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-or-cpu-resources

Sounds useful, i will try, thanks.

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

• switch to the Default System theme: "3-bar" menu button or Tools -> Add-ons -> Themes
• do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window

• https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode
• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

See also:

• https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-or-cpu-resources

You can check the about:memory and about:processes pages for info about all processes. There are several toolkit.aboutProcesses prefs on the about:config page to show more info. See also the about:unloads page for info about the tabs.

• https://Firefox-source-docs.mozilla.org/browser/tabunloader/

I will try with the memory report later

The browser just updated and in the changelogs i have seen a "memory leak" thing so.. I will.. see if the problem is fixed. if in the next days i see no more memory leaks, i will send a message again.

Nope. still memory leaks.

I opened a bug report here, and uploaded the Memory Report

https://bugzilla.mozilla.org/show_bug.cgi?id=1833070

Issue fixed. Memory Leak caused by a TamperMonkey Script