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Bug 5189 - High CPU usage with VSync
Summary: High CPU usage with VSync
Status: NEW
Alias: None
Product: SDL
Classification: Unclassified
Component: render (show other bugs)
Version: don't know
Hardware: Other Other
: P2 major
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-06-14 19:28 UTC by Andreas
Modified: 2020-06-15 05:01 UTC (History)
2 users (show)

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Description Andreas 2020-06-14 19:28:17 UTC 
High CPU usage on call to SDL_GL_SwapWindow when SDL_GL_SetSwapInterval(1) is set:

https://stackoverflow.com/questions/62373762/high-cpu-usage-with-vsync-turned-on-in-opengl-and-sdl2-application
Comment 1 Cameron Gutman 2020-06-14 20:29:55 UTC 
We're going to need more than that to debug:

- OS
- GPU hardware
- GPU driver version

If I had to guess, I'd say you're on Linux using the NVIDIA proprietary drivers, and that your problem is that you should try setting __GL_YIELD to USLEEP.
Comment 2 Ashfaaq 2020-06-15 05:01:50 UTC 
@Andreas thanks for posting this here, im not sure if this is a bug or not yet. So on to the problem, @Cameron i posted the problem in stackoverflow. The specs of my system are,
OS: windows 7
GPU hardware: gtx 750
GPU driver: 446.14