[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 #50 from Andy Furniss <adf.lists at gmail.com> ---
(In reply to comment #49)
> (In reply to comment #48)
> > (In reply to comment #46)

> > 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.

Ahh, so the fact that HUD stops rendering during the pauses means that spikes
are likely anyway.

Though my question wasn't really about the HUD as such, I was wondering where
they were moving to/from - I guess the answer may be too obvious, but just to
confirm.

I assume it's across PCIE to the card (or maybe from/both) - is it DMA or CPU
transfer? Is it dependent on app behavior or driver - eg. running Unigine
Reflections I saw a blip in the graph first run, but not again.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20140902/71f04669/attachment.html>