Measuring performance

Before we start getting into performance tuning, it's necessary to have an understanding of the current situation. Many sizings for Hyper-V setups, have seemingly been based on some random goodwill rough estimates without recognizing the current situation or future requirements. A far better approach to size Hyper-V setups relies on using the free MAP Toolkit, which you've already seen in Chapter 1, Accelerate Hyper-V Deployment. MAP collects performance counters of all the relevant components for a Hyper-V setup. In the same way as it is used to determine your Hyper-V sizing, it can be also used to create a performance baseline of your Hyper-V setup. This can also be achieved using Microsoft System Center Operations Manager. If you already have SCOM in place, this tool should be preferred over MAP. See Chapter 7, Management with System Center for details.

Both tools continuously read performance counters from Hyper-V hosts and their VMs and archive them in a database...