[Mesa-dev] glvnd: a lot of CPU overhead, lower performance

[Marek Olšák]

https://gitlab.freedesktop.org/glvnd/libglvnd/-/issues/222

On Fri, Oct 15, 2021 at 3:27 PM Marek Olšák <maraeo at gmail.com> wrote:

> Hi,
>
> I just enabled glvnd and noticed the performance is much lower.
>
> glxgears: 14% perf drop
> glvnd off: ~28000 FPS
> glvnd on: ~24000 FPS
>
> viewperf13 (some subtest): 11% perf drop
> glvnd off: 201 FPS
> glvnd on: 179 FPS
>
> glvnd spends a lot of time in libGL.so and some in libGLdispatch.so.
>
> The "off" results are with LD_LIBRARY_PATH redirected to libGL without
> glvnd.
>
> I'm curious if anybody knows how to persuade glvnd to be faster.
>
> Thanks,
> Marek
>
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