Linux 5.9 To Allow For Toggling Energy Efficiency Mode On Kaby Lake CPUs

[phoronix]

Phoronix: Linux 5.9 To Allow For Toggling Energy Efficiency Mode On Kaby Lake CPUs

The patches talked about last month for a new "energy efficiency" tunable for the Intel P-State driver for Kabylake / Coffeelake CPUs is set to go into Linux 5.9 for those wanting to increase the energy efficiency of these CPUs on Linux albeit with reduced performance...

http://www.phoronix.com/scan.php?page=news_item&px=Kaby-Lake-Energy-Efficiency-5.9

[starshipeleven]

If your performance wasn't low enough after the mitigations, you can also enable this I guess

[ResponseWriter]

I'd enable this on my laptop because it's rarely used for anything demanding but it's a Skylake. Likely to be replaced with a Ryzen 4000 series.

[V1tol]

I disabled all mitigations on my Coffee Lake Refresh laptop, but I also did 100mV undervolt on CPU and disabled Turbo Boost. Even without Turbo Boost but with disabled mitigations my laptop feels a lot more performant then with full frequency but mitigations on. And thanks to undervolt (and no TB of course) it is cool as it never ever was.