673304 - builder.addons.mozilla.org zombie compartment

Status: RESOLVED FIXED

(Core :: General, defect)

Description

[Nicholas Nethercote [:njn] (On Long Service Leave)]

On a recent Linux64 dev build, no add-ons enabled, moderately new profile...

Steps:
- Start Firefox
- open about:memory?verbose
- open https://builder.addons.mozilla.org/addon/1010707/latest/ in a second tab, then close it
- After an hour and many clicks of "minimize memory usage" the compartment is still there:

│  ├───5,437,193 B (08.07%) -- compartment(https://builder.addons.mozilla.org/addon/1010707/latest/)
│  │   ├──3,616,768 B (05.36%) -- gc-heap
│  │   │  ├──1,745,488 B (02.59%) -- arena-unused
│  │   │  ├──1,120,296 B (01.66%) -- objects
│  │   │  ├────670,208 B (00.99%) -- shapes
│  │   │  ├─────47,488 B (00.07%) -- arena-padding
│  │   │  ├─────21,192 B (00.03%) -- arena-headers
│  │   │  ├─────12,096 B (00.02%) -- strings
│  │   │  └──────────0 B (00.00%) -- xml
│  │   ├────898,169 B (01.33%) -- scripts
│  │   ├────589,824 B (00.87%) -- mjit-code
│  │   ├────204,144 B (00.30%) -- tjit-data
│  │   │    ├──148,000 B (00.22%) -- allocators-reserve
│  │   │    └───56,144 B (00.08%) -- allocators-main
│  │   ├────116,864 B (00.17%) -- object-slots
│  │   ├─────11,424 B (00.02%) -- string-chars
│  │   ├──────────0 B (00.00%) -- mjit-data
│  │   └──────────0 B (00.00%) -- tjit-code

Comment 1

[Andrew McCreight [:mccr8]]

Happens to me, too, on a Mac, with a few non-threatening addons and a super old profile.  Though I only waited a few minutes because I am impatient.  Similar memory profile.

Comment 2

[Alon Zakai (:azakai)]

I don't get this leak on a brand new linux32 debug build.

This page uses web workers. So I would like to be optimistic and believe that it is now fixed for the same reason bug 669545 is.

Comment 3

[Nicholas Nethercote [:njn] (On Long Service Leave)]

(In reply to comment #2)
> 
> This page uses web workers. So I would like to be optimistic and believe
> that it is now fixed for the same reason bug 669545 is.

I can no longer reproduce on Linux64, so I'm happy to be optimistic as well.