1278122 - Memory Leak in 46.01 /Linux

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect)

Description

[barry.rueger]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0
Build ID: 20160521140538

Steps to reproduce:

Seems similar to https://bugzilla.mozilla.org/show_bug.cgi?id=1259069

New system; fresh install of Mint Linux 17.3.  This is a stock install, with no plugins installed in  Firefox.




Actual results:

Firefox will start with c. 500-700 megs RAM usage.  If left unattended this will rise to well over 1.4 gig.

Eventually the entire system is locked and unresponsive, requiring a hard reboot.

Yes I often to have a lot of tabs open - perhaps a couple dozen - but this problem did not occur before the recent OS update.

If I close down Firefox the system carries on fine indefinitely.

If I leave Firefox open overnight the system will have slowed to a crawl, or locked up.

Locked up means that there is no response to either keyboard or mouse.


Expected results:

I expect that Firefox can be left running more or less forever without a problem.

about:memory is attached, after about an hour of uptime.

Comment 1

[barry.rueger]

Attachment: Firefox memoru Usage

Comment 2

[barry.rueger]

Attached is about:memory, five hours later.

Comment 3

[barry.rueger]

Attachment: memory-report2.json

Comment 4

[Cosmin Muntean [:cmuntean], Ecosystem QA]

Firefox: 50.0a1, Build ID  20160607071209
User Agent  Mozilla/5.0 (X11; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0

I don't have a Mint Linux 17.3, but I have tested this issue on Ubuntu 15.10 x64 with the latest Firefox (47.0) release and latest Nightly (50.0a1) build. 
Left the browser running in background a few hours with a large number of tabs opened but the memory usage was between ~300-700 MB depending how many tabs I have and the tabs content.

Could you please download the official release binary from "https://www.mozilla.org/en-US/firefox/new/?utm_source=firefox-com&utm_medium=referral" and the latest Nightly build from https://nightly.mozilla.org/ and retest this issue? When doing this, please use a new clean Firefox profile, maybe even safe mode, to eliminate custom settings as a possible cause (https://goo.gl/PNe90E).

Comment 5

[barry.rueger]

Running the official release, memory use seems stable.

Thanks!

Barry

Comment 6

[Cosmin Muntean [:cmuntean], Ecosystem QA]

Considering the fact that I can not reproduce this issue and based on comment 5, I will close this issue as Resolved - Worksforme.
If anyone can still reproduce it, feel free to reopen the issue and provide more information.