Lecrapouille
~100% CPU usage by Godot Engine when using v0.11.0-godot4 or higher
Hello,
I noticed there is ~100% CPU usage by Godot Engine when I use cef_artifacts from v0.11.0-godot4 or higher (I also tested 12, 14, 15, same problem).
When I use v0.10.0-godot4 it works fine.
Info
Windows 10
Godot 4.3
How it looks in Task Manager:
v0.10.0-godot4
v0.11.0-godot4 and higher
I'm not sure how to debug it.
This is because openmp consumes a lot of cpu resources when copying buffers. If you change this to “no” and build with CEF_USE_CPU_PARALLELISM = “yes” in build.py, the usage rate will go down. Of course, your performance will go down as well, but unless your resolution is very large (2K or more), you'll probably be fine. Personally, I've been working on an optimization that doesn't use openmp, but it's not good enough to commit yet.
@eliopark-nsuslab Thank you for your reply!
Performance is better with v0.10.0.
When I use v0.11.0 browser sometimes is extremally laggy (and sometimes it works fine).
I'm not sure CEF_USE_CPU_PARALLELISM is the culprit. When I look at diff in code between v0.10.0 and v0.11.0 I can see in both cases it's set to "yes". Link do diff: compare/v0.10.0-godot4...v0.11.0-godot4
CEF_USE_CPU_PARALLELISM = "yes"
@Pastew good point I also suspect the cpu consomption comes from the introduction of openmp. I did not had time to investigate. You can disable openmp and compile back. @eliopark-nsuslab good to hear you have a PR. If you were on the discord Sander made a PR to Godot specially for copying the texture to gpu avoiding extra cpu copy
@eliopark-nsuslab https://github.com/godotengine/godot/issues?q=is%3Apr%20state%3Aclosed%20author%3Akroketio