My storage/virtual machine is slow
The following are some questions and tasks you can take to troubleshoot slow or poor storage performance.
Inspect latency values to further pinpoint where performance degradation is occurring
Tip
You can refer Chapter 4, Troubleshooting Storage Contention, for more information on this topic.
Using esxtop and thresholds in Appendix B, Statistics of esxtop, inspect latency statistics (DAVG, KAVG, QAVG, and GAVG).
- High DAVG indicates a performance issue on the storage array or somewhere along the path to it.
- High KAVG indicates a performance issue within the VMkernel. Possible causes could include queuing, drivers, and so on.
- High QAVG indicates a performance issue is causing queue latency to go up. This could be an indicator ...
Get Troubleshooting vSphere Storage now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
