kernal_task using all CPU on iMac

Discussion in 'macOS Sierra (10.12)' started by FuzzyRaichu, Feb 2, 2017.

  1. FuzzyRaichu macrumors newbie

    Joined:
    Feb 2, 2017
    #1
    So every since updating to Sierra, my iMac has been spending all of the CPU power on kernal_task, and it's been making the whole machine run slow and the fan run obnoxiously loud.

    We tried reinstalling with recovery mode, and it worked... for about a day, and then went back to slow computer and loud fan. What can be done to fix this?
     
  2. gsahli macrumors 6502a

    gsahli

    Joined:
    Jun 1, 2007
    Location:
    Chicago
    #2
    I think you'll need to do a more in-depth analysis. kernel_task is a scheduler of others, so it's always in the top 5 on my mini (but not a high percent of CPU). Try etrecheck.
     
  3. FuzzyRaichu thread starter macrumors newbie

    Joined:
    Feb 2, 2017
    #3
    So etrecheck printed out this:

    Top Processes by CPU: <etrecheck://help/cpu> ⓘ <etrecheck://help/cpu>

    28% mds

    21% mds_stores

    8% WindowServer

    3% Adobe CEF Helper(2)

    2% kernel_task

    Which seems weird, because, again, kernel_task is (according to Activity Monitor) taking up 250-300%.
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    This is Spotlight indexing. Did you just add a bunch of files that need indexing?
     

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