1827906 - High memory usage and slow/jerky text size increase animation on https://www.sbnation.com/a/17776-football

Status: NEW

(Core :: Graphics: WebRender, defect, P2)

Description

[Jure Repinc (JLP)]

Steps to reproduce
0. Use a new profile or private window, if needed, since page remembers that you have gone through the transitional effect

1. Open https://www.sbnation.com/a/17776-football
2. scroll down if needed so text begins to increase

Expected result
Like in Chromium: text of the article smoothly increases until all page is black and than a green March 43 calendar page appears. Memory usage only slightly increases (a couple of 100 MB)

Actual result
Text increase effect is very jerky /slow and Firefox memory usage increases by about 3 GB (the first time Firefox got killed by OOM since I did not have enough free memory)

System information
Operating System: openSUSE Tumbleweed 20230409
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.8
Kernel Version: 6.2.9-1-default (64-bit)
Graphics Platform: Wayland 1.21.0
Processors: 4 × Intel® Core™ i5-6600 CPU @ 3.30GHz
Graphics Processor: AMD Radeon RX 480 Graphics (Mesa 23.0.1)

Comment 1

[Denis Palmeiro [:denispal]]

I can reproduce this locally. There is some minor jank for me with Chrome, but the experience is certainly far worse in Firefox. Here is a profile: https://share.firefox.dev/41x6iuK. There are some very long composite times in the Renderer process.

The Performance Impact Calculator has determined this bug's performance impact to be medium. If you'd like to request re-triage, you can reset the Performance Impact flag to "?" or needinfo the triage sheriff.

Platforms: Windows
Impact on browser: Causes noticeable jank
Impact on site: Causes noticeable jank
Page load impact: Some
[x] Affects animation smoothness

Comment 2

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

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

For more information, please visit BugBot documentation.

Comment 3

[Bob Hood [:bhood]]

Confirmed behavior in Fx114 (Nightly) on Win10 with NVIDIA 2080 Ti chip set (driver 531.79). Memory goes up by almost exactly 1GB, and I'm seeing slight jank in the text scaling.