Power plan capture may be misleading.

[gambit9009]

The perfstatsanalysis script creates an sp called "proc_PowerPlan".

if not exists (select * from tbl_PowerPlan where ActivePlanName like '%High Performance%')

So if the power plan name is not fully spelled out like that, it may flag "Power Plan is not set to high performance". But, at least in later Windows, you can rename your power plan. PC manufactures may have their own names for plans, etc. Someone could use the High Perf plan and change settings to it, without renaming it. The actual settings under the power plan, like CPU throttling, are really what we are concerned with, and not the name of the plan.

1. I'm adding this as an issue to PSSDiag to see if we can do better than just capturing the name of the plan.

See also microsoft/SqlNexus#145