High CPU usage on idle

[rex4539]

Steps to reproduce

1. Have Element idle in background.

Outcome

What did you expect?

Low CPU usage.

What happened instead?

CPU usage around 7-8%

Operating system

macOS 15.1

Application version

Element Nightly 2024110201

How did you install the app?

https://packages.element.io/nightly/install/macos/index.html

Homeserver

matrix.org

Will you send logs?

No

[arobertn]

I see the same (well at 4% rather than 8%) on an Intel 16" Macbook Pro running macOS 14.7.1 and Element 1.11.85, meaning I'll quit Element if not actively using it in order to preserve battery. It doesn't matter if Element is active, is showing with another app active, or hidden. Neither VS Code nor Slack show the same behavior. Are you configuring the Javascript event loop in some kind of "spin mode" rather than wait-for-IO?

[dbkr]

Just fired up the profiler to see if anything obvious comes out and it looks like https://github.com/floating-ui/floating-ui is stuck in a loop where its observer modifies the dom and therefore triggers another observe event, but it's throttled to only run every second so it's a small background hum rather than a 100% CPU loop: https://github.com/floating-ui/floating-ui/blob/ba32495e65a1616c8ee5ab98ebbc80705482ed34/packages/dom/src/autoUpdate.ts#L90

floating-ui/floating-ui#2831 may be related. I'm not sure what piece of UI would be floating.