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vSphere High Performance Cookbook

You're reading from   vSphere High Performance Cookbook A cookbook is the ideal way to learn a tool as complex as vSphere. Through experiencing the real-world recipes in this tutorial you'll gain deep insight into vSphere's unique attributes and reach a high level of proficiency.

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Product type Paperback
Published in Jul 2013
Publisher Packt
ISBN-13 9781782170006
Length 240 pages
Edition 1st Edition
Languages
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Author (1):
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Prasenjit Sarkar Prasenjit Sarkar
Author Profile Icon Prasenjit Sarkar
Prasenjit Sarkar
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Toc

Table of Contents (15) Chapters Close

vSphere High Performance Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. CPU Performance Design 2. Memory Performance Design FREE CHAPTER 3. Networking Performance Design 4. DRS, SDRS, and Resource Control Design 5. vSphere Cluster Design 6. Storage Performance Design 7. Designing vCenter and vCenter Database for Best Performance 8. Virtual Machine and Application Performance Design Index

Analyzing host and VM memory


Often you need to monitor virtual machine and host memory usage; the good part about this is that VMware vSphere Client exposes two memory statistics in the Summary tab of a virtual machine. These are consumed host memory and active guest memory.

Consumed host memory is the amount of host physical memory that is allocated to the virtual machine. Please note that this value includes the virtualization overhead also.

Also note that many VMs have oversized vRAM, and the guest operating system is likely to opportunistically fill up its vRAM with unnecessary things (for example, caching everything read from disk, no matter how unlikely it will be requested again). Consumed memory only means that the VM used this memory at some point, not that it's likely to use it again.

Active guest memory is defined as the amount of guest physical memory that is currently being used by the guest operating system and its applications.

These two statistics are quite useful for analyzing...

You have been reading a chapter from
vSphere High Performance Cookbook
Published in: Jul 2013
Publisher: Packt
ISBN-13: 9781782170006
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