计算机硬件的发展使得功能强大而相对便宜的多处理器服务器成为主流,但在许多情况下,这些系统的性能不能得到充分的利用,而近来多核心处理器的普及,也使得这种不充分性更加严重,这也是业界对虚拟化产生兴趣的原因。虚拟化环境提供了一个软件层,使得用户能够在同一个物理服务器内创建多个独立的虚拟机,同时运行多个虚拟机虽然会有一些虚拟化 The development of computer hardware has made mainstream multiprocessor servers powerful and relatively inexpensive, but in many cases the performance of these systems can not be fully exploited, and the recent proliferation of multi-core processors has also made such an inadequacy More serious, which is why the industry is interested in virtualization. The virtualization environment provides a software layer that allows users to create multiple, separate virtual machines within the same physical server, while running multiple virtual machines at the same time, although there may be some virtualization