Powercfg change policy scheme

Question

Hello All,

May I kindly ask you to help me resolve some strange for me windows behavior?

I have some question related to powercfg process. About 2 hours after windows patching I saw on my Windows 2016 standard server in windows log below information:

According my collogues they didn't change any settings.

My question is:

1. Is it possible that patch did this?
2. Is it possible that process POWERCFG is able to do this by itself? As far as I know some third part software can do this but we have in logs that was powercfg not some other software.
3. Default power plan on server after installation should be high performance plan, right?

Regards,
Sebastian

Answer 1

Hi Sebastian,
System writes an event with the source "UserModePowerService" and ID "12" when user switches power plan manually.
So about you’re the first questions, my answer is possible, but it is a very small possibility. As you said, I also heard some games or third-party software can change power plan, you need to check it carefully.

About your question 3, my answer is Yes.
Even though High Performance power plan will disable dynamic performance scaling on the platform.
Depending on the environment, if the platform is always under a heavy load, High Performance plan is a viable solution. In most cases, the workload varies throughout the day and thus it's recommended to leave the power plan set to Balanced and evaluate the proper settings within the Balanced power plan for processor power management.

However, If your server is a SQL Server/Web Server, High-Performance Plan is a good choice.
Similar case:
https://serverfault.com/questions/667351/is-there-any-reason-to-keep-the-power-option-on-default-balanced-instead-of-h

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