kernel_task / airport - wasting CPU

Discussion in 'macOS' started by nyc863, Jun 2, 2010.

  1. nyc863 macrumors newbie

    Joined:
    Jun 2, 2010
    #1
    OSX 10.6.3 all updates applied.
    connected to airport
    3ghz core 2 duo, 4gb ram

    the problem I have is that kernel_task takes 15 to 20% (system) CPU all the time, when Airport is "on" (but no network traffic) and 0% when airport is switched off.

    I find this unreasonable. It also makes the Mac soggy when the browser is also choked up, as 25% is basically 100% of one core on a 4 core machine.

    Any ideas?
     
  2. celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #2
    The "kernel" is Mac OS X. It will take up a lot of CPU at times, and not that much at other times. Nothing you can do about it.
     
  3. nyc863 thread starter macrumors newbie

    Joined:
    Jun 2, 2010
    #3
    I know it is the kernel.

    What I can observe is simply deactivating the Airport removes the load on the CPU. Activating the airport re-instates it. The load is very high. Up to 25% of this 3ghz multi-core processor!!

    So it isn't just "kernel work" it is a bug. I'm just trying to get ideas as to what.

    If you google "kernel_task airport" you get this problem reported on and off for several years. Usually people on macbooks notice it because it heats up their laptop.
     
  4. nyc863 thread starter macrumors newbie

    Joined:
    Jun 2, 2010
    #4
    nobody has any ideas why enabled (but no network activity) airport wifi uses so much CPU?
     

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