1661594 - Firefox 79.0.5 struggles with reddit videos.

Status: REOPENED

(Core :: Performance: Responsiveness, defect, P2)

Description

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

Originally filed as https://github.com/mozilla-mobile/fenix/issues/14080

Steps to reproduce

Firefox seems to struggle on reddit.com. Especially when it includes video autoplays. It also struggles to take scroll inputs properly, delays by ~2 sec on each scroll input when a video is playing. Also sometimes crashes.

Expected behavior

Smooth video playback and scrolling.

Actual behavior

App freeze

Device information

Android 9 with 2GB RAM

Comment 1

[Jon Bauman [:jbauman:]]

Is this Fenix-specific or not?

Comment 2

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

I don't know – this was reported by user of Fenix (with 3 thumbs up on the original comment). I think trying to reproduce in fenix or GeckoView would be a good place to start an investigation.

Looking at the original issue report, it sounds like this might be a better fit for Core :: Performance than media.

Comment 3

[Jon Bauman [:jbauman:]]

Core :: Performance might be a better home. Or perhaps this should be duplicated against bug 1267674, unless you see a meaningful difference.

At some point playing too many videos at once is going to overtax system resources, so perhaps the right solution is limiting the number of videos which will autoplay at once or something similar. I'm going to mark this as a duplicate for now; feel free to re-open if you see a meaningful difference.

Comment 4

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

There may be a fenix-specific solution (e.g. disabling autoplay on reddit only in fenix) so I'm going to reopen and move to perf. They can choose to close if they think it's similar enough. :)

Comment 5

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

The severity field is not set for this bug.
:mstange, could you have a look please?

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