Book Image

vSphere High Performance Cookbook - Second Edition - Second Edition

By : Kevin Elder, Christopher Kusek, Prasenjit Sarkar
Book Image

vSphere High Performance Cookbook - Second Edition - Second Edition

By: Kevin Elder, Christopher Kusek, Prasenjit Sarkar

Overview of this book

vSphere is a mission-critical piece of software for many businesses. It is a complex tool, and incorrect design and deployment can create performance related issues that can negatively affect the business. This book is focused on solving these problems as well as providing best practices and performance-enhancing techniques. This edition is fully updated to include all the new features in version 6.5 as well as the latest tools and techniques to keep vSphere performing at its best. This book starts with interesting recipes, such as the interaction of vSphere 6.5 components with physical layers such as CPU, memory, and networking. Then we focus on DRS, resource control design, and vSphere cluster design. Next, you’ll learn about storage performance design and how it works with VMware vSphere 6.5. Moving on, you will learn about the two types of vCenter installation and the benefits of each. Lastly, the book covers performance tools that help you get the most out of your vSphere installation. By the end of this book, you will be able to identify, diagnose, and troubleshoot operational faults and critical performance issues in vSphere 6.5.
Table of Contents (17 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Memory performance best practices


Virtualization causes an increase in the amount of physical memory required due to the extra memory needed by ESXi for its own code and data structures, and you need to know what are the best practice standards you have.

There are four basic principles that you should keep in mind:

  • Allocate enough memory to hold the working set of applications that you will run on the VM, thus minimizing swapping. You can estimate the working set by monitoring the Active Memory counter.
  • Do not disable the balloon driver.
  • Keep TPS enabled. It's free!
  • Avoid overcommitting memory to the point that it results in heavy memory reclamation, especially complicated Swap In rates (KBps).

How to do it...

So you may ask how can we determine the total required data center memory?

Well, there are several methods to determine the total memory capacity requirement:

  • Use the information gathered during the current state analysis to determine the current memory capacity requirements
  • Use application...