how fast is virtual box supposed to be

Discussion in 'Windows, Linux & Others on the Mac' started by jerwin, Nov 9, 2016.

  1. jerwin macrumors 68000

    Jun 13, 2015
    I tried booting into my bootcamp partition with virtual box, and am rather disappointed in it's lack of speed. I'm running a 5k imac, with an i5 and 24 gigabytes of ram. It lags, by a noticeable marging Am I missing something?
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  2. MacUser2525 macrumors 68000


    Mar 17, 2007
    Yes the idea that virtualization comes at a cost to running the same software on bare metal as they call it when installed directly on a machine. To start with you have generic drivers for the disk I/O, graphics, sound, pretty much everything and then add in the reduced ram available and emulation and you can end up with slow pig of an environment.
  3. David58117 macrumors 65816

    Jan 24, 2013
    Have you increased the ram usage?
  4. kschendel macrumors 6502a

    Dec 9, 2014
    This is purely subjective, but to me, virtualized Windows seems to run much worse than virtualized Linux, as compared to the bare metal of either. You might try giving the virtual machine a bit more RAM to see if it helps.
  5. maflynn Moderator


    Staff Member

    May 3, 2009
    I found performance in VB to be inferior to that of Vmware and Parallels. The latter two have done a lot of work on performance and they're both solid. My only experience with VB and windows has been rather negative but that was a few versions ago.

    I use virtualbox with linux and that's fast enough, but I'll not use it for windows.
  6. b0fh666 macrumors 6502a


    Oct 12, 2012
    did you install the virtualbox drivers for everything (display, disk, basesystem, etc) into the windows you are booting? that speeds stuff up.

    but I find booting the same windows installation on hardware and VM problematic at best... windows is a bit dumb with its hardware detection and often messes it up.
  7. Teon macrumors regular


    Feb 14, 2016
  8. ajay96 macrumors 6502

    Jul 29, 2013
    Yup, same for me. I can use most Linux based distros fine in VMWare, but Windows tends to lag a lot.

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