[Bug 60344] [IVB]openarena power regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=60344

--- Comment #6 from Ouping Zhang <ouping.zhang at intel.com> ---
I am not sure how to check if openarena is refresh-rate limited, as Jesse
suggested, running power workload should not set vblank_mode=0.
the avg fps @ 1366x768
57.0 fps
cat /sys/class/drm/card0/power/rc6_residency_ms
cat /sys/class/drm/card0/power/rc6p_residency_ms

rc6_residency_ms increase from 2132 to 2617 
rc6p_residency_ms increase from 714842 to 770503 

(In reply to comment #5)
> We need the numbers before and after the test run, to see how often it hits
> rc6 during the run. (Also if you can grab those values for the working
> kernel so that we can compare)

That it enters rc6 at all suggests that it
> is more likely either the rps tuning values or yet-another-side-effect of
> the forcewake dance.

Are you sure openarena is refresh-rate limited? Last
> time I tried, the openarena benchmark itself was disabling vsync. Presumably
> you are using UXA, so scanline waits aren't implemented (which would keep
> the GPU awake as well) and you've made sure the fb size is the same size as
> the mode. (It is not normally if openarena changes the resolution itself via
> SetVidMode.) The ultimate question is whether you are getting pageflips at
> all. Also difficult to guess without the avg/max fps @ resolution.

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