VirtualBox causing big peaks in CPU

Derek Broughton news at
Wed May 7 17:01:40 UTC 2008

Paolo wrote:

> Hello,
> I used VirtualBox 1.5.6 very easily and with no problems on Gutsy in order
> to run Windows XP, giving it 400Mb of memory.
> Since the upgrade to Hardy Virtual Box still runs (it asked to be
> reinstalled), but I get a lot of peaks of CPU usage as soon as I open the
> WIndows box. It makes it quite difficult to use.
> I have clicked the VirtualBox packet in Synaptic, hoping that it will
> upgrade someday soon, because I see version 1.6 is now released on the
> VirtualBox site.
> Is anyone else having the same experience?
> Any ideas what to do about it? 

Too _much_ memory.  Win XP shouldn't need 400Mb of memory in VirtualBox, and
that's (virtual) memory that will no longer be available to your Linux
tasks.  So you get swapping, and CPU usage.

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