Serious bug: all virtualization software very high CPU usage

Discussion in 'OS X Yosemite (10.10)' started by Jalu, Oct 15, 2014.

  1. Jalu macrumors member

    Joined:
    Mar 1, 2004
    #1
    Yesterday, I decided to install Yosemite public beta 6 (build 14A388b) and I have stumbled on a serious bug which probably impacts everyone who uses virtual machines(VMs) in any way. A VMWare Fusion (7) VM is nearly unusably slow, while the vmware-vmx process eats up every CPU cycle on every CPU core assigned to the VM. This causes even an idle VM to become unresponsive.

    I've converted my VM (running Windows XP with some old software I regularly use) to a Virtualbox VM and, while it works slightly better, exactly the same thing happens: I have one CPU core assigned to the VM and the VirtualBoxVM process constantly uses up all available CPU cycles on that core, constantly running at 100% usage, even when the VM itself is completely idle.

    My first thought was a bug in either VMWare Fusion and VirtualBox, but more people on the VMWare support forum also mentioned exactly this problem.

    It would appear there's something wrong with Yosemite. Any thoughts?
     
  2. DolsJ macrumors member

    Joined:
    Aug 27, 2008
    #2
    exact same experience with Parallels 10. After updating to Yosemite yesterday all of my VMs are so slow they are essentially unusable. Definitely seems to be a bug with Yosemite that is affecting any hypervisor.
     
  3. mmcneil macrumors regular

    mmcneil

    Joined:
    Sep 4, 2001
    Location:
    Indianapolis, IN
    #3
    Parallels update - performance

    Ready for OS X Yosemite!
    New Feature: Download Windows 10 Technical Preview from File > New…

    This update for Parallels Desktop 10 for Mac build 10.1.0 (28600) addresses overall stability and performance issues, and includes the following fixes:

    - Resolves an issue with Parallels Desktop canceling Mac shutdown
    - Resolves issues with missing shortcuts to virtual disks on the Mac desktop.
    - Resolves a number of issues with visual artifacts in Coherence
    - Resolves issues with application window focus in Coherence
    - Resolves an issue with Metro apps not launching on Windows
    - Resolves an issue with an error splitting a virtual hard disk
    - Resolves an issue with Ubuntu 12.04 crashing on restart after Parallels Tools installation
    - Resolves an issue with the NumLock key not staying ON
    - Resolves an issue with EFI boot enabled virtual machines not starting
    - Resolves an issue with the Parallels Tools prl_tg driver failing to install
    - Resolves an issue with high CPU usage when connecting a USB device to a virtual machine
    - Resolves an issue with the Solid Edge program crashing in a virtual machine
     
  4. HPReg macrumors newbie

    Joined:
    Oct 21, 2014
    #4
    On the VMware side, the issue (which only happens on specific hardware, for example iMac12,2) is being discussed at https://communities.vmware.com/thread/492900 .
     
  5. pacmania1982 macrumors 6502a

    pacmania1982

    Joined:
    Nov 19, 2006
    Location:
    Birmingham, UK
    #5
    I have not experienced this performance issue you mention on my rMBP. I was running the developer previews since the beginning. I use the latest VMware fusion release.

    Have you upgraded to the latest version rather than running the public beta?

    pac
     
  6. Rafterman macrumors 68000

    Joined:
    Apr 23, 2010
    #6
    I also have no issues with Fusion 7, running Mac, Windows and Linux VM's -no issues on a late 2013 Macbook Retina 15. But I also have 16GB RAM, so I assign 8GB RAM for each VM as I usually only run one at a time, and that helps in performance. Probably overkill though, I suppose 4GB would be enough. . .
     

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