No. of CPU Option

This is for discussing general topics about how to use VirtualBox.
Post Reply
pratikshah83
Posts: 5
Joined: 2. Oct 2008, 08:10

No. of CPU Option

Post by pratikshah83 »

Hi all,
Does no. of CPU option correspond to physically no. of CPU available or to no. of cores also.
I mean if I am running on a quad core CPU in the host OS then can I change the no. of CPU value to 2/3.

And can I change this option or is it advisable to change it once the guest OS is up and running?

Thanks,
Pratik
Sasquatch
Volunteer
Posts: 17798
Joined: 17. Mar 2008, 13:41
Primary OS: Debian other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows XP, Windows 7, Linux
Location: /dev/random

Re: No. of CPU Option

Post by Sasquatch »

You can't change it when a VM is running. Would be a bit weird don't you think? Adding an additional CPU or core while a PC is running.

If you meet the hardware requirements for SMP, then it's the cores it's talking about. Having two CPUs allows you to give the VM two processors. Having two quad core CPUs allows you to give the VM 8 processors, but that's not advised. Always leave one core for the Host, so the VM can't bring down the system.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org

Retired from this Forum since OSSO introduction.
Post Reply