Node.js V8 Engine Layer

Using the tests mapped to this layer, administrators can easily find out the following:

• erratic CPU usage patterns;

• functions that are CPU-intensive;

• errors encountered by each Node.js V8 Engine instance;

• time duration for a single event loop and the time for which an event loop was idle;

• identify the application that takes time to return control to the event loop;

• time spent in collecting garbage of each garbage collection type and the memory reclaimed;

• threads consuming maximum CPU and memory resources;

• heap memory utilization and;

• unscheduled reboots, if any.

Figure 1 : The tests mapped to the Node.js V8 Engine layer