AMDGPU-PRO vs. Open-Source Gallium3D OpenGL Performance On Polaris Is A Very Tight Race

[dungeon]

Well, if you have time and i if am in your place i would first try to find one worse one case... Then start bisect anything, either code but bisecting in game settings first as it might happen only on some setting scenario, etc...

That way, we might conclude on the end what we actually guessing currently here

[agd5f]

I was thinking the same regarding Windows comparisons. And add the 290 (hopefully the regression is taken care of soon).

The 290 regression is a bug in DRI3 exposed by async page flipping. The fix is actually a mesa patch:

https://lists.freedesktop.org/archives/mesa-dev/2016-August/126338.html

[bridgman]

Great, so hopefully that should take care of the 260X regression as well...

[pal666]

That makes me sure that more and more of the close source team is contributing to the open source driver and this is also what AMD said will happen.

yes, because they switched to open kernel, so all blob kernel devs are now working on amdgpu. and i think some other components too

[MrCooper]

Well, it could still be accidentally expensive checks when freeing some memory or something like that, but that is for people who know the code to decide.

Nothing matching your description comes to mind offhand, but I guess it's possible.

Since the CPU seems to stay pegged during the stalls, a system profile taken around one of them might be enlightening, but that might be difficult without a way to reproduce it reliably.

[MrCooper]

The 290 regression is a bug in DRI3 exposed by async page flipping. The fix is actually a mesa patch:
https://lists.freedesktop.org/archiv...st/126338.html

Note that this patch only helps with sync-to-vblank enabled. Since PTS always sets vblank_mode=0 AFAIK, I'm afraid it can't help for the regressions Michael has reported. If anyone else can reproduce the regressions with PTS (or otherwise with sync-to-vblank disabled), bisecting would still be interesting.

[Max Payne]

RadeonSI is still slower than GpuPro at lower resolutions on counter strike go
Those 20fps more or less can be the difference between staying always above the 144hertz or having small breaks during gameplay,
that can hamper the game experience if playing in a more competitive manner.