[mythtv-users] OpenGL profile using over 100% CPU

Mark Kendall mark.kendall at gmail.com
Wed Jan 21 04:23:20 UTC 2009


2009/1/21 Jean-Yves Avenard <jyavenard at gmail.com>:
> I have compiled and installed trunk (19770)... I've noticed that none
> of the display profile using OpenGL that I used to run on 0.21-fixes
> using your OpenGL patches now work properly.
>
> When using opengl rendering with any of the HW de-interlacer, playing
> a 1080i MPEG2 TV stream will result in huge stuttering and a CPU usage
> of over 130%... This is on a E8500 (3.16GHz Core 2 Duo).
>
> It is fine for SD channel.
>
> For HD, I use the following display profile: opengl renderer, Kernel
> (2X, HW) deinterlacer
> for SD: opengl renderer , Yadif (2X, HW)
>
> This used to work just fine before..

After a quick bit of testing, it looks like there could be issues with
the opengl vsync - load increases with it compiled in and increases
even more if it is enabled. Can you try compiling without opengl-vsync
enabled? (it's not enough to simply disable it in the gui)

Thanks

Mark


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