SYSTEMS DEVELOPMENT ANALYSIS
APPLICATION DEVELOPMENT PROCESSES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
You want to collect and analyze performance characteristics of your Java application. Which action correctly accomplishes this?
|
|
Use REST API to collect JFR data for the last 1 minute.
|
|
|
ssh Into the application VM to collect JVM heap dump.
|
|
|
Collect JFR data for the last 1 hour using the UI.
|
|
|
Use the PSM CLI to collect heap dump.
|
Explanation:
Detailed explanation-1: -Flight Recorder (JFR) is a tool for collecting diagnostic and profiling data about a running Java application. It is integrated into the JVM and causes very small performance overhead, so it can be used in production environments.
Detailed explanation-2: -JFR doesn’t have a standalone tool. We use Java Mission Control (JMC), which contains a plugin that allows us to visualize the data collected by JFR. These three components-JFR, jcmd and JMC-form a complete suite for collecting low-level runtime information of a running Java program.
There is 1 question to complete.