[Mesa-dev] Performance regression on Tegra/GK20A since commit 363b53f00069

[Alexandre Courbot]

Some more information: CPU usage of the EGL app (glmark2 here) is much 
higher when this patch is applied, which I presume is what triggers the 
frame skips.

On 11/19/2014 03:05 PM, Alexandre Courbot wrote:
> Hi guys,
>
> I am seeing a severe performance regression (lots frame drops when
> running EGL apps in Weston) on Tegra/GK20A since the following commit:
>
> commit 363b53f00069af718f64cf047f19ad5681a8bf6d
> Author: Marek Olšák <marek.olsak at amd.com>
> Date:   Sat Nov 1 14:31:09 2014 +0100
>
>      egl: remove egl_gallium from the loader
>
> Reverting said commit on top of master brings the expected performance
> back. I am not knowledgeable enough about Mesa to speculate about the
> reason, but could we try to investigate why this happens and how we
> could fix this?
>
> Thanks,
> Alex.