[PATCH 3/6] drm/syncobj: Do not allocate an array to store zeros

[Michel Dänzer]

On 2025-01-02 20:44, Tvrtko Ursulin wrote:
> 
> "vkgears -present-mailbox" average framerate:
> 
>   Before: 21410.1089
>   After:  21609.7225
> 
> With a disclaimer that measuring with vkgears feels a bit variable,
> nevertheless it did not look like noise.

That's ~1% difference. IME the frame rate can easily vary more than that during a single run.

The frame rate surely varies by more than 1 fps during each run, so comparing such large average values down to 4 digits after the decimal point doesn't seem very useful.

Doing multiple (at least 3 or more each) before & after runs and comparing the distribution of individual measured values using something like ministat might confirm it's essentially noise, or give more confidence it's not.


-- 
Earthling Michel Dänzer       \        GNOME / Xwayland / Mesa developer
https://redhat.com             \               Libre software enthusiast