CPU Usage (Windows 7 64-bit Guest)

Discussion in 'Windows Virtual Machine' started by Frappy, Sep 17, 2009.

  1. Frappy

    Frappy Bit poster

    Messages:
    4
    Has anyone identified (as of the 4.0 release), why a Windows 7 64-bit Guest at idle consumes 25% of CPU on the host (prl_vm_app)?

    I see that FreeBSD had the same issue, but you're able to change a setting in the loader.conf that set's the kern.hz=100 (and then the idle percentage drops to around 2 to 3%).

    Has anyone else experienced this issue?
     
  2. JarredD

    JarredD Bit poster

    Messages:
    3
    I'm getting the same, but I'm running 5.0. I'm still happy with the product, but it would be nice to know.
     
  3. Dennis Wahlgren

    Dennis Wahlgren Junior Member

    Messages:
    10
    I'm running XP in Parallels 5 and while prl_vm_app doesn't use much CPU, it is hogging a LOT of my real memory. I see it taking upwards of 500-700 MB. I have 2GB installed so this is a fairly sizeable chunk of it (especially since Safari seems to grab an increasingly large amount of memory and not release it, either).

    I have tried setting the VM to use either 512MB or 768 MB RAM but neither seems to have an appreciable effect on the real memory used by this prl_vm_app.
     
  4. Shaddam IV

    Shaddam IV Forum Maven

    Messages:
    623
    I'm observing the same. I barely scrape by on my 2 GB machine (256 of which are video memory) with a 768 MB VM - if I'm lucky I can open my email program on the Mac side and work in the VM...
     

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