一.虚拟交换系统(VSS) VSS是一种网络虚拟化技术,讲两台Catalyst 6500系列交换机组合为单一虚拟交换机,从而提高运营效率.增强不间断通信,并将系统带宽容量扩展到1.4Tbps.在初始阶段,VSS将使两台物理Cisco Catalyst 6500系列交换机作为单一逻辑虚拟交换机运行,称为虚拟交换系统1440(VSS1440). 虚拟交换系统1440与传统网络设计的比较 二.VSS1440 VSS1440指由两台采用Virtual Switching Supervisor 720-1…

BACKGROUND This invention relates to virtual machines. In particular, the invention relates to translation lookaside buffers that support a virtual-machine system. A virtual-machine system is a computer system that includes a virtual machine monitor…

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to network file systems and schemes, and more particularly, to a network file system that appears to its clients to be a single file system, while locating…

A processor including a virtualization system of the processor with a memory virtualization support system to map a reference to guest-physical memory made by guest software executable on a virtual machine which in turn is executable on a host machin…

A processor including a virtualization system of the processor with a memory virtualization support system to map a reference to guest-physical memory made by guest software executable on a virtual machine which in turn is executable on a host machin…

在了解虚拟文件系统之前,必须先知道什么是 Kernal  Space 与 User  Space. Kernal Space 与User Space 的差别,在于内存使用上安全机制的差异. kernal执行时会占据一段系统的内存空间, 这一段内存空间便是Kernal  Space.  所有用户是无法和kernal  space  直接交互的.     在/proc/iomem文件中所记录的kernal地址, 可以在命令行中执行: cat   /proc/iomem  | more User  S…

http://www.ibm.com/developerworks/library/l-virtual-filesystem-switch/ http://www.ibm.com/developerworks/linux/library/l-linux-filesystem/ https://www.kernel.org/doc/Documentation/filesystems/vfs.txt https://www.thomas-krenn.com/de/wikiDE/images/2/2d…

一.VFS作为内核子系统,为用户空间程序提供了文件系统相关的接口.所有实际文件系统依赖VFS共存,依靠VFS系统工作. 1.VFS提供通用文件系统接口:用户空间程序可以利用标准的UNIX文件系统调用,如open()\read()\write(),对不同物理介质上的不同文件系统进行操作. 2.VFS提供文件系统抽象层:VFS提供了一个通用文件系统模型,该模型囊括了所有实际文件系统的常用功能和行为.VFS抽象层定义了所有实际文件系统支持的基本的.概念上的接口和数据结构,所以VFS能衔接各种实际文件系…

BACKGROUND INFORMATION An embodiment of the present invention relates generally to virtualization platforms and, more specifically, to a system and method to run components of a virtual machine monitor at a reduced privilege level. Various mechanisms…

In one embodiment, a method includes transitioning control to a virtual machine (VM) from a virtual machine monitor (VMM), determining that a VMM timer indicator is set to an enabling value, and identifying a VMM timer value configured by the VMM. Th…