Chapter 4. Monitoring and Performance Considerations

The topics covered will show you how to monitor some of the performance areas of the vSphere environments. There will be an overview of disk I/O performance, and how to use vSphere to identify the I/O intensive virtual machines. This chapter will also explore how vCenter uses Java, and how it should be configured to obtain the best performance. This chapter will help the administrator recover from the issues that occur when a change is made to vCenter and when the performance information does not get displayed.

Here is a list of the topics that will be covered in the chapter:

• Overview of disk I/O performance
• Pinpointing the most I/O intensive virtual machines
• Changing Java memory usage for performance
• Fixing the issue with performance data not appearing on vCenter