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This 9 pages PDF called 7 Tips for troubleshooting vSphere 5 – from Global Knowledge will show you simple ways to troubleshoot vSphere 5. You'll see how to check your storage performance, network performance, through the CLI. Other related performance issues around multicore CPUs with using LLC cache can also be detected.
7 Tips for Troubleshooting vSphere 5 – the content:
- Logging in via Command Line
- Performance Monitoring Tools
- If You Suspect a Network Performance Issue
- Metrics to Check for a Possible Storage Problem
- Log Files to View in vSphere ESXi 4.x
- Last-Level Cache (LLC) performance issue
- Cannot Migrate a Virtual Machine (VM) Using VMotion
VMware support has seen an increase in performance problems due to the new CPUs utilizing LLC cache. The idea is that LLC is a shared cache for multi-core cpus. Each core inside a CPU package has its own L1 and L2 cache that is dedicated to that particular core. But with the modern multi-core processor, one of the things that the CPU vendors are doing is building a last-level cache around all of these cores so it’s a shared cache for all Copyright ©2012 Global Knowledge Training LLC. All rights reserved. 8 of the CPUs.
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The Author:
Steve Baca has been working in the Information Technology field for more than 15 years, after graduating from the University of Nebraska with a Bachelors degree in Computer Science and Mathematics. Steve has been doing technical training for VMware, Netapp, Sun Microsystems, and Symantec. In addition to teaching, Steve has done technical editing. He wrote the course for Sun Microsystems Network Troubleshooting, as well as several white papers.
