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vSphere High Performance Essentials by Christian Stankowic

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Chapter 3. Understanding CPU Resources

In the last chapter, we focused on optimizing vSphere cluster setups for high performance. In this chapter, we will take a look at CPU resources and how vSphere utilizes them. We will take a look at the following topics:

  • How CPU virtualization works
  • Resource mapping and scheduling
  • Virtual machine monitor
  • Memory management unit
  • Non-uniform memory access vs. uniform memory access
  • vCPU design approaches
  • Latency-sensitive tweaking
  • DirectPath I/O and single root I/O virtualization

How CPU virtualization works

In this chapter, we will take a look at how vSphere makes use of the CPU resources to schedule them on the running workloads. You will learn how the following components are part of a big picture:

  • Physical servers with ...

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