Java Flight Recorder is a profiling and event collection framework built into the Oracle JDK.
It allows Java administrators and developers to gather detailed low level information about how the Java Virtual Machine (JVM) and the Java application are behaving.
The data contained in the JFR file includes events from the JVM and from any other event producer, such as WebLogic Server and Oracle Dynamic Monitoring System (DMS). The JFR file can be analyzed at any time, using Java Mission Control, to examine the details of system execution flow that occurred leading up to an event.
