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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [BDW]GFX device consume the same Watt as Idle when it's active"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80078">bug 80078</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEW
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<td>NEEDINFO
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [BDW]GFX device consume the same Watt as Idle when it's active"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80078#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [BDW]GFX device consume the same Watt as Idle when it's active"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80078">bug 80078</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>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).</pre>
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