1391929 - browser is extremely unstable with 4k native monitors and causes huge memory leaks.

Status: RESOLVED WORKSFORME

(Core :: Audio/Video: Playback, defect, P2)

Description

[tennfan8]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0
Build ID: 20170628075643

Steps to reproduce:

use browser for 18 hours straight.


Actual results:

Browser is extremely unstable and causes huge memory leaks that can be as big as 16.3 GBs resulting in the browser crashing afterwards


Expected results:

browser should not crash and not use 16.3 GBs of RAM that I need.

Comment 1

[Kohei Yoshino [:kohei]]

Please troubleshoot with Safe Mode: https://support.mozilla.org/kb/troubleshoot-firefox-issues-using-safe-mode

Comment 2

[Marius Coman [:mcoman], Ecosystem QA]

Hi Tennfan8,
 
Can you please retest this issue on latest Firefox release (55.0.2) using a new clean Firefox profile (https://goo.gl/iJqvLZ)?
Also could you please give us more information regarding the number of tabs which you have open and if possible please list some of the websites you are encoutering this on.
And finally please navigate to about:crashes and provide at least a few of the crash reports generated by Firefox.

Thank you,
Marius

Comment 3

[Wayne Mery (:wsmwk)]

And, are you suggesting that problem does not reproduce if a 4k monitor is not used?

Comment 4

[tennfan8]

if the monitor is 4k native and over 15% of the screen (maximized) has a video or animation on it, the browser will lag/drop frames. The memory leak occurred when I had the browser open for 18 hours straight and only one or two tabs are open. When I reduced my monitors resolution to 1080 the lag stopped but the memory leak continued. the browser also doesn't leave crash logs because the browser freezes and has to be closed with the task manager.

Comment 5

[Blake Wu [:bwu][:blakewu]]

Can you check [1] to save your memory report and upload it?
Also if you are watching Youtube, can you choose 4k content via setting on a non-4k monitor to see if it has something to do with monitor? 

[1]https://developer.mozilla.org/en-US/docs/Mozilla/Performance/about%3Amemory

Comment 6

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

Can you also please attach the information from about:support ?

Comment 7

[Blake Wu [:bwu][:blakewu]]

I cannot reproduce this bug and we have got reporter's feedback over 2 months, so close this bug. If someone still can see this bug, please feel free to reopen it.

Comment 8

[Blake Wu [:bwu][:blakewu]]

(In reply to Blake Wu [:bwu][:blakewu] from comment #7)
> I cannot reproduce this bug and we have got reporter's feedback over 2
                                         ^not
> months, so close this bug. If someone still can see this bug, please feel
> free to reopen it.