Re: [REGRESSION] drm/sched: FAIR policy causes serious performance degradation at max GPU load on 9070XT

[Philipp Stanner]

On Mon, 2026-08-10 at 16:40 +0000, Luke.Wildhardt@xxxxxxxxx wrote:
> Oops, forgot to reply all in my last message.
> 
> I did a quick test of the patch before I left this morning, the
> freezing seems to gone, but when the GPU is under the same condition,
> the stuttering is more uniform if that makes sense. Granted this was
> only a 5 minute test but the freeze was rather reliable before, I can
> do more testing later.

That, unfortunately, indeed sounds as if we should go for the revert
ASAP.

> 
> I know these things can be hard to describe, if that helps. If
> there's any profiling I could do or detailed logging that would help
> don't hesitate to ask.
> 

Would a screencast / filmed screen be helpful? IIRC Steam also has some
fps counter etc in a submenu somewhere?


In any case, if we want to go for the CFS rework in another respin, I
suppose that it would be cool if @Tvrtko and you stay in contact


Thank you very much for the report!
Philipp