CPU usage way too high

Discussion in 'Windows Virtual Machine' started by bnguyen, Sep 4, 2012.

  1. pborzenkov

    pborzenkov Junior Member

    If you have stable reproduction, the best way to deal with this problem is to file a bug for Apple: http://bugreport.apple.com
    It might take a lot of time to resolve the issue, considering that it most likely won't be high priority for them.
    Until then, the only solution I could suggest is to not change DVD to HDD :(
  2. PaulChristopher@Parallels

    PaulChristopher@Parallels Product Expert Staff Member

    Hi, please follow the steps mentioned below to fix the issue
    1. Download CPU throttle application to your Mac.
    2. Move it to somewhere it can be kept for long period of time (like Documents).
    3. Note: following lines should be typed without quotes. Go to the same location in Mac Terminal ('cd ~/Documents').
    4. Type in: 'chmod +x cputhrottle'
    5. Go to 'Activity Monitor' and find the process you want to limit (in Parallels Desktop case - 'prl_vm_app'). Note its PID.
    6. Back in Terminal, type in: 'sudo ./cputhrottle ' (example: 'sudo ./cputhrottle 766 70'). You may also need to enter Mac user's password into Terminal if it asks for it.
    7. Application is now active. It is limiting the CPU consumption of virtual machine process and your CPU should no longer heat up as much.
    8. You can stop running cputhrottle by pressing CTRL+C in Terminal. This will remove the limit on the process.

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