Example Workflow of How to Find Latencies

Example Workflow of How to Find Latencies

The application that has been used in this example contains a common method for logging transactions, which causes many latencies due to Java synchronization. These latencies can be found in almost all threads in the recording. This section will guide you through how the JRA Tool can be used to find which method that contains the latency.

Note:

This is an example recording that contains extremely visible latencies, the application that you are looking at might not contain as obvious latencies.

Look in Figure 16-20 for an example workflow of how to start your latency detective work.

Figure 16-20 Example workflow for finding latencies

The workflow is divided into the following instructions:

1. Create a JRA Recording with Latency Data
2. Open the JRA Recording in the Latency Graph Tab
3. Look on the Latency Traces Tab to Find Specific Method
4. Add a Suspected Method to the Operative Set
5. Look at Operative Set on the Latency Traces Tab
6. Perform Changes to Your Application
7. Compare and Contrast Recordings