VirtualBox causing big peaks in CPU
jonesc at hep.phy.cam.ac.uk
Fri May 9 14:11:50 UTC 2008
Derek Broughton wrote:
> Chris Jones wrote:
>>> 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.
>> That entirely depends on a) how much ram the host machine has and b)
>> what else it is doing whilst it is running the VM with 400Mb ram. If the
>> conditions are right you can give a VM as much ram as you want...
> Sure you can - but if you're seeing huge CPU spikes, that's a clue :-)
Swapping doesn't normally generate a lot of CPU usage. In fact the
opposite normally (IME) as the CPU is left waiting for data to be ready
for it to use.
More information about the ubuntu-users