[Bug 82050] R9270X pyrit benchmark perf regressions with latest kernel/llvm

https://bugs.freedesktop.org/show_bug.cgi?id=82050

--- Comment #41 from Andy Furniss adf.lists@gmail.com --- (In reply to comment #40)

(In reply to comment #39)

...

If you let it run with Basic theme and few rounds you will spot i guess that only first round there is unusual maybe 2-3 times 1-2 sec stutters, then second time and later it is stutter free.

Andy, you have behavior like that (more or less those seconds for stuter) if PIPE_USAGE_STREAM is reverted, right?

The Bad was with vanilla mesa (couple of days old)

The good was that + the patch in Comment 19

I looked again at Unreal Reflections - there is a difference but it's only right at the start, both have a couple of stutters and they are longer with vanilla then the rest is OK in both cases.