1552722 - Obscene leak to the GC, in both VRAM and system memory, during video playback

Status: RESOLVED INCOMPLETE

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

Description

[Paul17041993]

Attachment: number details during playback

Go to youtube for example, play some high quality video, check taskman's VRAM usage and the content process's commit and dedicated usage.

VRAM and RAM grows by multiple gigabytes in seconds, proceeding to be GC'ed followed by playback stutter and temporary freezes.

The buffers should be re-used for each frame needed, at most there should only be a buffer for each intermediate frame plus their parent reference frame.

I suspect a bad buffer check is causing new ones to be created?

Comment 1

[Paul17041993]

Attachment: graph view example

Comment 2

[Paul17041993]

I'd also suspect the issue would be much more severe on lower-power systems, or at least those with otherwise "bare bone" amounts of VRAM and/or RAM...

Comment 3

[Liz Henry (:lizzard) (relman/hg->git project)]

What version of Firefox are you using? Do you see the same issue in nightly 69?

Comment 4

[Jean-Yves Avenard [:jya]]

This is likely related to bug 1549181

Comment 5

[Marcela (Please NI request to Brindusa Tot)]

Hi Paul17041993!
I'm trying to see if old bugs can be solved. I was unable to reproduce it on latest Nightly version 96.0a1 (2021-11-03)(64-bit) on Windows 10.
Could you try to reproduce it on latest Nightly and tell us your input? You can download it here: https://nightly.mozilla.org/
Thanks!

Comment 6

[BugBot [:suhaib / :marco/ :calixte]]

Redirect a needinfo that is pending on an inactive user to the triage owner.
:jimm, since the bug has high severity, could you have a look please?

For more information, please visit auto_nag documentation.