Chapter 1. XEN: A HIGH-LEVEL OVERVIEW
We'll start by explaining what makes Xen different from other virtualization techniques and then provide some low-level detail on how Xen works and how its components fit together.
Virtualization Principles
First, we might want to mention that computers, even new and fast ones with modern multitasking operating systems, can perform only one instruction at a time.[8] Now, you say, "But my computer is performing many tasks at once. Even now, I can see a clock running, hear music playing, download files, and chat with friends, all at the same time." And this is true. However, what is actually happening is that the ...
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