itmannen_online skrev:Hur i fridens dagar aktiverar man detta i Ubuntu ?
Krävs för att kunna köra 2 processorer i Oracle VM.
Kan detta vara något tro?
Enabling the I/O APIC is required for 64-bit guest operating systems, especially Windows Vista;
it is also required if you want to use more than one virtual CPU in a virtual machine.
"On the "Processor" tab, you can set how many virtual CPU cores the guest operating systems should see. Starting with version 3.0, VirtualBox supports symmetrical multiprocessing (SMP) and can present up to 32 virtual CPU cores to each virtual machine.
You should not, however, configure virtual machines to use more CPU cores than you have available physically.
On this tab you can also set the CPU execution cap. This setting limits the amount of time a host CPU spents to emulate a virtual CPU. The default setting is 100% meaning that there is no limitation. A setting of 50% implies a single virtual CPU can use up to 50% of a single host CPU. Notet that limiting the execution time of the virtual CPUs may induce guest timing problems.
In addition, the "Enable PAE/NX" setting determines whether the PAE and NX capabilities of the host CPU will be exposed to the virtual machine. PAE stands for "Physical Address Extension". Normally, if enabled and supported by the operating system, then even a 32-bit x86 CPU can access more than 4 GB of RAM. This is made possible by adding another 4 bits to memory addresses, so that with 36 bits, up to 64 GB can be addressed. Some operating systems (such as Ubuntu Server) require PAE support from the CPU and cannot be run in a virtual machine without it.
With virtual machines running modern server operating systems, VirtualBox also supports CPU hot-plugging. For details about this, please refer to Section 9.5, “CPU hot-plugging”."
