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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #49 from Marek Olšák <maraeo at gmail.com> ---
(In reply to comment #48)
> (In reply to comment #46)
> > I've seen some stutters without any corresponding buffer moves though. Still
> > not sure why it's stuttering so bad sometimes.
> > 
> > BTW, Andy, does the stuttering also seem to get better for you if you run
> > Valley repeatedly?
> 
> No, it's quite consistent if I quit and re-run.
> 
> The amount moved doesn't seem to correlate with the length of pause - and
> sometimes there are small moves without stutter, so maybe it's not totally
> this.
> 
> Looking at Heaven 4.0 there are no moves at all after load, but there are a
> few very brief stutters on the night scenes - these are the same with or
> without patch though.
> 
> What does num-bytes-moved measure - from where to where?

The HUD always displays an average value per frame. It's the average of all
values between the current and the last update of the HUD.

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