1437112 - 10s of GB of heap-unclassified with WebRender enabled

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect, P1)

Description

[Erik Rose [:erik][:erikrose]]

Attachment: memory-report.json.gz

Twice this week (perhaps coinciding with my upgrade from 59 to 60), I've caught Firefox in the background using 30-60GB of RAM (though more like 1GB resident). I've attached a memory report.

In the latest case, I also noticed 2 content processes "not responding".

Comment 1

[Andrew McCreight [:mccr8]]

Are you using WebRender or any other non-default thing you can think of?

The main process looks like this:

51,742.58 MB (100.0%) -- explicit
├──50,964.45 MB (98.50%) ── heap-unclassified

Comment 2

[Erik Rose [:erik][:erikrose]]

Yes, gfx.webrender.enabled is on.

Comment 3

[Andrew McCreight [:mccr8]]

I'll assume it is related to that given that there are some known issues with leaks...

Comment 4

[Erik Rose [:erik][:erikrose]]

I'll turn it off and post if it recurs.

Comment 5

[Henrik Skupin [:whimboo][⌚️UTC+1]]

I don't see a couple of GB for the main process but the following is also already more than enough (in case it is the reason of WebRender):

1,175.63 MB (100.0%) -- explicit
├────858.79 MB (73.05%) ── heap-unclassified

Comment 6

[Eric Rahm [:erahm]]

Erik, how are things looking now?

Comment 7

[Erik Rose [:erik][:erikrose]]

It's been fine ever since I turned off WebRender. I've also been updating Nightly every few days, keep in mind.

Comment 8

[Eric Rahm [:erahm]]

Okay lets close this for now.