1606222 - Network connection - High GPU load until the "connection timeout" message appear caused by throbber

Status: NEW

(Core :: Graphics, enhancement, P3)

Description

[MrX1980]

Attachment: Win10_19041_Firefox_GPU-usage_1.jpg

If Firefox tries to connect to a (no longer existing) website like https://amorebetterlife.com I noticed a higher GPU load (Task Manager -> Performance -> GPU) as long as it reaches the "network connection timeout" message compared to other browsers.

Firefox Beta 72 / Nightly 73
WebRender ~ 12 % GPU / 3D load
Direct3D 11 (Advanced Layers) ~ 10% GPU / 3D load

Microsoft Edge (old), Edge Chromium Canary, Opera Dev
~ 5% GPU / 3D load

Could it be that the "jumping dot" (left <-> right) animation in the left of the tabs is using the high GPU usage or is it a "screen/content refresh" problem?

Reason: In my opinion on devices with a battery this will unnecessary drain the battery.

Comment 1

[MrX1980]

Attachment: Win10_19041_Firefox_GPU-usage_2.jpg

Comment 2

[MrX1980]

Attachment: Firefox_Nightly_73_about-support_WebRender.txt

Comment 3

[MrX1980]

Attachment: Firefox_Nightly_73_about-support_Direct3D.txt

Comment 4

[Bert Peers [:bpeers]]

I confirmed with picture cache debugging enabled that only the upper left tile is invalidating (the one with the animating dot), so at least nothing is seriously wrong where we re-draw the whole page. However we still need to composite/refresh the whole page so the DirectComposite work might fix this (WIP). Thanks for the report!

Comment 5

[Nicolas Silva [:nical]]

The OS compositor integration landed a little while ago, are you still experiencing unreasonably high GPU load ?

Comment 6

[MrX1980]

Between the example website reacts different than for 8 month ago, so I currently cannot reproduce it and can't find a similar page behavior.
In my opinion we can close it until I/we find a new example.
Thank you so far.

Comment 7

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

The bug has a release status flag that shows some version of Firefox is affected, thus it will be considered confirmed.