1457759 - High CPU on macOS with animated SVG

Status: NEW

(Core :: Graphics, enhancement, P2)

Description

[Albert Scheiner [:alberts]]

Testing "Window on Earth" https://addons.mozilla.org/en-US/firefox/addon/window-on-earth/ - which features animated theme/background images, my fans' RPM started to go up. Checking the CPU, Dev Edition main process is on ~120%.

Comment 1

[Mike de Boer [:mikedeboer]]

Hmm, yeah that's something that might just happen. But perhaps we can do something about this becoming a real footgun and check out whether we can optimize something with this addon in mind?
Least we can do is check out its source code.
Tim, is that something you'd be interested in doing?

Comment 2

[Tim Nguyen :ntim]

Seems like this theme uses an animated SVG, so that might be what hogs the CPU.

Comment 3

[Mario García H.]

Today, a year later there's no solution. Using animated themes ate 15 watts more from my whole Linux rig. Unacceptably un-green. #ClimateChange #YourChildrenHaveNoFuture #BadFirefox

PS, I'm willing to provide any extra information needed to solve this.

Comment 4

[Albert Scheiner [:alberts]]

I have got a new test case for this: https://www.svgator.com/

Tested hardware: 2021 MBP Apple M1 Pro

The current animation on the front page causes 220-230% CPU in Firefox 116.0b2 main thread (while tab active; main thread normalises if tab in background)

to compare

• Safari 16.5.1 : Web Content thread ~130-140%
• Chrome 114.0.x: Helper (GPU) thread ~75-90% + Helper (Renderer) thread ~30-35% --> 105-125%