[Bug 207667] power_dpm_force_performance_level set to "low" reduces CPU performance (Vega 8 / Ryzen 2200G)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=207667

alekshs at hotmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from alekshs at hotmail.com ---
I think I discovered what's the issue by playing with a utility called
RyzenAdj.

With RyzenAdj when setting the igp freq to 200 from 400 it doesn't do much for
power consumption. It's when I play with the CPU-GPU speed parameter (fabric
speed?) that power consumption goes down significantly. 

So apparently power_dpm_force_performance_level to low sets both MHz and fabric
speed lower. The first wouldn't make sense to affect CPU performance, the
second is known to affect it - so after thinking about it more, I don't think
it's a bug.

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