2 Replies Latest reply on Dec 29, 2016 2:56 PM by necrophyte

    processor power management optimization


      ive been playing around with the processor power management options (win 10 pro 64bit) for quite a while already since i noticed that my old notebook's cpu (i7-720qm) struggles with running on full power (mainly due to heat i assume).


      i already managed to optimize performance quite noticeably, but some of the settings are not fully clear to me resp. their default settings are quite confusing, even contradicting to their descriptions.


      so if there is somebody familiar with processor power management - ie. idle and performance states and their respective settings, some explanations and recommendations would be highly appreciated.


      my main aim is to make the cpu run on as few cores/threads possible, clocked as high as possible, before unparking additional cores/threads. ie. to be highly responsive for just a few tasks rather than manage multiple tasks simultaneously, and not getting throttled because too many threads get unparked although just a few - but clocked high - would manage it better. mainly because most of my tasks much more require few but high clocked threads than more parallel processing.


      here are the settings i have set currently:

      processor performance increase threshold - 30%
      processor performance core parking min cores - 13%
      processor performance decrease threshold - 20%
      processor performance core parking concurrency threshold - 95%
      processor energy performance preference policy - 20%
      allow throttle states - off
      processor performance decrease policy - ideal
      processor performance core parking parked performance state - no preference
      processor performance boost policy - 100%
      processor performance increase policy ideal - aggressive
      processor idle demote threshold - 30%
      processor performance core parking distribution threshold - 90%
      processor duty cycling - disabled
      processor idle disable enable - idle
      processor performance core parking decrease threshold - 60%
      processor performance core parking decrease policy - ideal
      processor idle promote threshold - 50%
      minimum processor state - 50%
      processor performance autonomous mode - enabled
      processor performance core parking overutilization threshold - 80%
      system cooling policy - active
      processor performance core parking core override - disabled
      maximum processor state - 100%
      processor performance boost mode - aggressive
      processor performance core parking increase policy - ideal
      processor performance core parking increase threshold - 80%
      processor performance core parking utility distribution - disabled
      processor performance core parking max cores - 100%


      what confuses me a bit are the default settings in power saver & high performance profiles of

      processor idle demote threshold - ps: 20% / hp: 40%

      processor idle promote threshold - ps: 40% / hp: 60%

      judging from their descriptions, i would actually suggest them being exactly opposite?!


      any suggestions on these two options resp. how to optimize the power settings better to achieve what i explained above - as few cores/threads unparked as possible, clocked as high as possible, before unparking more, without capping min/max states or preventing threads from parking/unparking completely?