857806 - Memory consumption increases to 2.4 GiB over a week (w/44 extensions enabled)

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect)

Description

[Allan Gardner (:Mathnerd314)]

Attachment: aboutmemory_censored

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0
Build ID: 20130307122351

Steps to reproduce:

Opened some tabs, browsed normally, left it open for a week.


Actual results:

Memory increased to 2.4 GB or so.


Expected results:

Memory should have stayed constant at around .5-1 GB.

Comment 1

[Allan Gardner (:Mathnerd314)]

Attachment: about:support

Comment 2

[Andrew McCreight [:mccr8]]

At a glance, this part looks the most suspicious to me:

├────692,717,904 B (65.95%) -- layout
│    ├──489,972,528 B (46.65%) ── style-sets
│    ├──104,415,960 B (09.94%) ── frames

I'm not sure what "style sets" are, though.

Comment 3

[Allan Gardner (:Mathnerd314)]

Attachment: about:support JSON

Comment 4

[Allan Gardner (:Mathnerd314)]

Attachment: about:crashes

Comment 5

[Nicholas Nethercote [inactive]]

Style sets are CSS stuff.

More suspicious is the fact that there are more than 30
http://www-ig-opensocial.googleusercontent.com/gadgets/ifr?exp_rpc_js=1... windows, each of which contains 3 compartments.  I wonder if there's a leak there.

This is also interesting:

2,183 (100.0%) -- js-compartments
├──1,109 (50.80%) ── system
└──1,074 (49.20%) ── user

That's a lot of system compartments.  Oh, but you have 44 extensions enabled!  That's a lot.  621 of the system compartments have "bootstrap.js" somewhere in the name, so extensions explain that, I think.

But really, we need an about:memory diff to make sense of the increase.  Roll on bug 848560...

Comment 6

[Nicholas Nethercote [inactive]]

Bug 848560 has landed.  Thanks for waiting.

Can you update to the latest Nightly and use the "Write reports to a file" button at the bottom of about:memory to take measurements before and after?  Thanks!

Comment 7

[Allan Gardner (:Mathnerd314)]

Now running the nightly, I'll upload some dumps if/when the memory usage spikes.

Comment 8

[Allan Gardner (:Mathnerd314)]

The memory usage has been reasonable for quite a while... closing.