How to test CPU Power Management?

[antonio765]

I'm trying to figure out if CPU Power management works on my laptop. I do this like that:

$ sudo mkdir /kexts
skylake:Downloads antonio$ sudo cp -R AppleIntelInfo.kext /kexts/
skylake:Downloads antonio$ sudo kextutil /kexts/AppleIntelInfo.kext
Kext with invalid signatured (-67062) allowed: <OSKext 0x7fc78f542230 [0x7fff928538e0]> { URL = "file:///kexts/AppleIntelInfo.kext/", ID = "com.pikeralpha.driver.AppleIntelInfo" }
Code Signing Failure: not code signed
Disabling KextAudit: SIP is off

After this I'm looking for changes in dat file:

$ sudo tail -f /tmp/AppleIntelInfo.dat
CPU P-States [ (13) 19 37 ] iGPU P-States [ ]
CPU C3-Cores [ 3 4 5 ]
CPU P-States [ (10) 13 19 37 ] iGPU P-States [ ]
CPU C3-Cores [ 2 3 4 5 ]
CPU P-States [ 10 (13) 18 19 37 ] iGPU P-States [ (18) ]
CPU C3-Cores [ 0 1 2 3 4 5 7 ]
CPU P-States [ (10) 12 13 18 19 37 ] iGPU P-States [ 18 ]
CPU P-States [ (10) 12 13 15 18 19 37 ] iGPU P-States [ 18 ]
CPU P-States [ 10 12 (13) 15 18 19 22 37 ] iGPU P-States [ (18) ]
CPU C3-Cores [ 0 1 2 3 4 5 6 7 ]
CPU P-States [ 10 12 (13) 14 15 18 19 22 37 ] iGPU P-States [ CPU P-States [ (10) 12 13 14 15 18 19 20 22 37 ] iGPU P-States [ 18 ]
CPU P-States [ 10 12 (13) 14 15 18 19 20 21 22 37 ] iGPU P-States [ 18 ]
CPU P-States [ (10) 12 13 14 15 17 18 19 20 37 18 CPU P-States [ 10 12 13 14 15 16 17 18 19 20 21 22 (37) ] iGPU P-States [ 18 CPU P-States [ (10) 12 13 14 15 16 17 18 19 20 CPU P-States [ 10 12 13 14 15 16 17 18 19 20 21 22 23 (34) CPU P-States [ 10 12 13 14 15 16 17 18 19 20 21 22 23 34 37 (38) ] iGPU P-States [ (18) ]
CPU P-States [ 10 12 (13) 14 15 16 17 18 19 20 21 22 23 27 34 37 CPU P-States [ (10) 12 13 14 15 16 17 18 19 20 21 22 23 25 27 34 37 38 ] iGPU P-States [ 18 ]

However I'm not sure what does it mean? Does it mean that power management works?

 

[verebes]

Download and install the Intel Power Gadget and start a resource hungry app if you will see the charts going up and down it means it is working correctly. It also shows the GPU power management for that I would start a 3D game and see if it changes. That did it for me.