SDL2 CPU hog

SDL Development
1

Dear Forum,

I have a large application recently ported from SDL1 to SDL2 all has gone fine except that under linux the CPU usage floats around 90%. All is well on Windows.
This appears to be be problem with NVidia but not ATI. Has anyone else seen this? Is there a fix?

Thanks,

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2

It sounds like your application is constantly pumping out frames. You could try enabling vertical synchronization.–
Melker Narikka

dave.lawrence kirjoitti Mon Oct 06 2014 17:52:05 GMT+0300 (EEST):

Dear Forum,

I have a large application recently ported from SDL1 to SDL2 all has gone fine except that under linux the CPU usage floats around 90%. All is well on Windows.
This appears to be be problem with NVidia but not ATI. Has anyone else seen this? Is there a fix?

Thanks,

[/code]

3

Hi,

We’ve enabled VSYNC and usage has indeed dropped, but it still considerably higher than running on Windows. and if we have VSYNC enabled on Windows CPU usage there dramatically increases!

thx,