wekan: High CPU load in browser

Server Setup Information:

Did you test in newest Wekan?: yes
For new Wekan install, did you configure root-url correctly https://github.com/wekan/wekan/wiki/Settings ? yes
Wekan version: v2.56
Deployment Method(snap/docker/sandstorm/mongodb bundle/source): Docker/kubernetes
Http frontend if any (Caddy, Nginx, Apache, see config examples from Wekan GitHub wiki first): Kubernetes nginx-ingress
Node Version: from Docker container
MongoDB Version: docker.io/bitnami/mongodb:3.6.6-debian-9

Problem description: When opening a wekan board, CPU usage for Chrome and Firefox (possibly others, not tested) increases substantially - with my largest board open, and no other tabs, both Firefox and Chrome will use an entire CPU core. The amount of CPU load seems to be roughly proportional to the number of cards in the board. The CPU usage does occur when the dashboard page is open

About this issue

Original URL
State: closed
Created 5 years ago
Comments: 18 (15 by maintainers)

Commits related to this issue

list: do not use IntersectionObserver to reduce CPU usage Switch back to a custom spinner detection, as the IntersectionObserver is eating a lot of CPU resources on idle. This should also take care ... — committed to bentiss/wekan by bentiss 5 years ago

Most upvoted comments

@bentiss

Thanks for the fix. https://github.com/wekan/wekan/pull/2302 seems to help a lot but I still feel like the cpu usage is higher than before the initial scroll fix applied. The cpu usage is sometime steadily goes up and down even when the browser is in the background and no user intereaction happens. I personally would no keep Wekan open in the background if I am on a laptop as of now. In any case the cpu usage went down quite a bit though.

Using

Wekan Version v2.57.0 Node version v8.15.1

gerroon on Apr 3, 2019