Foreword Many people see that the price of VPS with the same configuration is very different, and they don't understand it. In fact, VPS uses many kinds of virtual technologies, such as OpenVZ, Xen, KVM, and Xen's HVM
Introduction When we chop hand machines, we usually care about the overselling situation. Here we briefly describe the overselling capacity of each virtualization architecture technology.KVM non oversold resources: memory, hard disk space Memory: KVM is completely exclusive when allocating memory