Performance Measurements
Apress eBooks · 2006
The distributed layered execution model that hosts enterprise Java applications greatly complicates our performance measurement task. Figure 3-1, which you may recall from Chapter 1, reproduces this visually. Enterprise Java applications run inside a layered execution model. The application runs in an application server that runs inside a Java Runtime Environment that runs in an operating system on a hardware platform. When applications grow, then they require multiple application server nodes and interactions with other external systems such as databases and legacy systems.