Help. Question about Activity Monitor and CPU usage

Discussion in 'macOS' started by VideoNewbie, Aug 2, 2013.

  1. VideoNewbie macrumors 6502

    Feb 6, 2009
    im currently running a few programs one of which is virtualbox .

    on the activity monitor under "%cpu" i see that it is jumping back and forth from 30-80 %

    on the bottom left of the activity monitor though it says %user 2 %system 10

    which number should i be concerned about? why is the %cpu for virtualbox so high yet my system % is only 10

    does this mean my computer could handle 10 x whatever its doing on virtualbox?
  2. benwiggy macrumors 68020

    Jun 15, 2012
    You don't say what Mac you have. Bear in mind that the % CPU figure for each process is PER CORE. So you may find a process running at 110%!

    The System % the bottom is the entire value of your whole CPU.

    Generally, my advice is not to spend your time monitoring your system unless you have a problem. If you are getting spinning wheels and slowdowns, then yes, look at Activity Monitor.:D

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