CPU Usage off

Discussion in 'Mac OS X Lion (10.7)' started by BreakGuy, Mar 16, 2012.

  1. BreakGuy macrumors 6502a

    BreakGuy

    Joined:
    Nov 23, 2009
    Location:
    NZ, South Pacific
    #1
    I've noticed this but am unsure as to whether it's completely normal, or if it's something I need to be concerned about. One application (retickr) is using around 100% CPU, more at times, yet at the bottom of the Activity Monitor the CPU usage is letting me know that <70% of my CPU is idle.

    Screenshot attached for your viewing.
     

    Attached Files:

  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    First, change "My Processes" at the top to "All Processes". That will reveal all that's running on your system in addition to the apps you launch. Also, your CPU utilization is a maximum of 100% per core. On a dual core system, it can go to 200%; on quad-core, 400%.
     
  3. BreakGuy thread starter macrumors 6502a

    BreakGuy

    Joined:
    Nov 23, 2009
    Location:
    NZ, South Pacific
    #3
    Whenever a sole application runs near or above 100% my battery life plummets and my macbook gets very hot, very quick.
     
  4. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #4
    That's to be expected, even with an app using 70% or more CPU. The more demand on system resources, the more drain on battery power and the higher the temps will be. (But I know you know that!)
     
  5. BreakGuy thread starter macrumors 6502a

    BreakGuy

    Joined:
    Nov 23, 2009
    Location:
    NZ, South Pacific
    #5
    Seems strange that it would heat up like it does even though the CPU is running at less than half its potential 200%
     

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