[Bug 80078] [BDW]GFX device consume the same Watt as Idle when it's active

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80078

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
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             Status|NEW                         |NEEDINFO

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
Your hypothesis is valid, I worry that either the measurement itself is faulty
(I haven't checked if the RAPL registers for the GPU have been moved for bdw)
or if simply that you haven't generated enough GPU load for it to consume
significantly more power - i.e. it we are not hitting rc6 and if the test stays
at low frequency throughout, it is plausible for you to not measure any
difference.

So repeat your test with a busy workload and see if that then detects a
difference in GPU power consumption (to validate your testing methodology).

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