Sibylline Reporter
	Description • 7 years ago

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0
Build ID: 20170608105825

Steps to reproduce:

Using Firefox to browse Facebook, and watch Youtube in the same session. Browser active for over an hour. (Issues persist in Safe Mode).

Using Windows 10. I run 8GB of RAM, 3.5GHz Pentium CPU, NVIDIA 1050 2GB VRAM.


Actual results:

The browser slows down, starts using excessive RAM (up to 2.5GB) and freezes, and has to be force closed via TaskManager.


Expected results:

Obviously, this shouldn't be an issue. Firefox has never used more than 400MB of RAM on my system. The expected result is actually working as it should, especially on a well-running system like mine.

	Ciprian Muresan [:cmuresan], Ecosystem QA
	Comment 1 • 7 years ago

Hi Sibylline,

Could you please provide a list of add-ons you have installed from about:support? Also, can you disable all the add-ons and see if that fixes the performance issue? If that works, you can re-enable your add-ons one by one to figure out which one is causing the issue.

And lastly, if the above doesn't work, could you please take a memory profile from about:memory once you hit the issue you are experiencing?

	Sibylline Reporter
	Comment 2 • 7 years ago

My Plug-Ins

	Eric Rahm [:erahm]
	Comment 3 • 7 years ago

Sibylline, can you try the steps Ciprian suggested? My main guess is that your youtube add-ons are causing issues, so testing with those disabled and getting us a memory report from 'about:memory' by clicking 'Measure and save' and attaching it here would be really helpful.

	Cosmin Muntean [:cmuntean], Ecosystem QA
	Comment 4 • 7 years ago

Considering the fact that I cannot reproduce this and the fact that the reporter did not answered to Criprian and Eric request until now, I will mark this as Resolved-Incomplete.

If anyone can still reproduce it on latest versions, feel free to reopen the issue and provide more information.