Closed Bug 1676512 Opened 4 years ago Closed 2 years ago

Lower performance on Webrender than on Direct3D 11 (Advanvced Layers)

Categories

(Core :: Graphics: WebRender, defect, P3)

Product:
Core
Component:
Graphics: WebRender
Version:
Firefox 82
Platform:
x86_64
Windows 10
Type:
defect

Tracking

()

Status:
RESOLVED INCOMPLETE

People

(Reporter: konrad.kolodziejczyk.poczta, Unassigned, NeedInfo)

References

(Blocks 1 open bug)

Details

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0

Steps to reproduce:

On Dell Latitude E7250 (Intel HD 5500 GPU) I've compared performance (smootheness of scrolling and CPU usage) on WebRender and on Direct 3D 11 (Advanced Layers) (gfx.webrender.force-disabled set on true in about:config).

Actual results:

On Webrender performance is significantly lower. Web pages scrolling on Webrender is not so smooth as it is on Direct3D 11 compositing. I've also noticed higher CPU usage as I watch Youtube videos.

Expected results:

On Webrender performance should by higher than on Direct3D 11 acceleration.

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Component: Untriaged → Graphics: WebRender
Product: Firefox → Core

Are you to able to take some profiles using https://profiler.firefox.com/ with "Firefox Graphics" preset of the different situations with WebRender on and WebRender off?

Flags: needinfo?(konrad.kolodziejczyk.poczta)

https://share.firefox.dev/36lfWoU (direct3D scrolling of sport.tvp.pl)
https://share.firefox.dev/3pg56Jl (WebRender scrolling of sport.tvp.pl)
https://share.firefox.dev/3pg56Jl (direct3D watching https://www.youtube.com/watch?v=N1-Jmq7BLFE)
https://share.firefox.dev/3nfyvRU (WebRender watching https://www.youtube.com/watch?v=N1-Jmq7BLFE)

Flags: needinfo?(konrad.kolodziejczyk.poczta)

Proper link for direct3D watching https://www.youtube.com/watch?v=N1-Jmq7BLFE : https://share.firefox.dev/2GOOl6J

Blocks: wr-perf
Severity: -- → S3
OS: Unspecified → Windows 10
Priority: -- → P3
Hardware: Unspecified → x86_64

The profiles of scrolling definitely show WebRender being worse. I don't notice anything particularly bad in the YouTube profiles. Can you file a separate bug for the YouTube CPU issue?

Flags: needinfo?(konrad.kolodziejczyk.poczta)
Flags: needinfo?(jmuizelaar)

(In reply to Jeff Muizelaar [:jrmuizel] from comment #5)

The profiles of scrolling definitely show WebRender being worse. I don't notice anything particularly bad in the YouTube profiles. Can you file a separate bug for the YouTube CPU issue?

It's done.
bug 1676967

Flags: needinfo?(konrad.kolodziejczyk.poczta)
Blocks: wr-low-end-perf
No longer blocks: wr-perf

Konrad, are you still seeing this specific issue? (not bug 1676967)

Flags: needinfo?(konrad.kolodziejczyk.poczta)

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

For more information, please visit auto_nag documentation.

Flags: needinfo?(konrad.kolodziejczyk.poczta) → needinfo?(gwatson)

This is impossible to check because in the newest Firefox it is impossible to enable Direct3D acceleration.

Status: UNCONFIRMED → RESOLVED
Closed: 2 years ago
Flags: needinfo?(gwatson)
Resolution: --- → INCOMPLETE
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