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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#c7">Comment # 7</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:lei.a.liu@intel.com" title="liulei <lei.a.liu@intel.com>"> <span class="fn">liulei</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=80078#c6">comment #6</a>)
<span class="quote">> 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</span >
Do you have a recommended workload which would generate enough power meter?
<span class="quote">>- 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).</span >
In fact, I have tested three different game demos(3DMMES2_taiji, cs,
OglDrvCtx), and get the same consumption as idle.</pre>
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