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v17 LibreELEC Testbuilds for x86_64 (Kodi 17.0)
(2016-08-20, 07:29)fritsch Wrote: No - there are no kernel issues anymore.

Have you noticed how badly behaved the Intel pstate powersave governor is with kernel 4.6 and 4.7 on Braswell? It doesn't clock my N3150 up to maximum turbo with software decoding and causes skipping in Kodi and MPV. Kernel 4.4 is OK.

My workaround is to modify the airmont_params in intel_pstate.c like this:
setpoint =35 (was 60)
deadband = 15 (was 0)

I think that gives an up threshold of 50 and a down threshold of 20.

With those settings it does clock up to max turbo with software decoding, and down to minimum with hardware decoding, using Kodi 17 alpha2.

It's a pity you can't set these via sysfs.

Beware: turbostat from kernel 4.7 reports my Braswell at 3.3GHz! If only that were possible... You need an earlier version to get plausible numbers.
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Messages In This Thread
3D HOU/HSBS issue - by .bismarck - 2016-06-20, 20:03
RE: LibreELEC Testbuilds for x86_64 (Kodi 17.0) - by LateAdopter - 2016-08-20, 13:52
[Build #0903] breaks VAAPI - by MichaelAnders - 2016-09-04, 15:37
Update Failed - by n2vwz - 2016-09-27, 19:34


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