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JAVA MEMORY LEAK, UTILISATION AND MONITORING USING JFR using Mission Control Java flight recording(JFR) help us to analyse and find the root cause of any slowness in our program along with CPU usage , hot methods and garbage collection , profiling etc. To visualise we need to feed .jfr file to JDK mission control present in JDK bin folder. After successful compilation , we should run the program with below option which will generate the .jfr and feed to mission control. command : j ava -XX:+UnlockCommercialFeatures -XX:+FlightRecorder -XX:StartFlightRecording=duration=200s,filename=flight.jfr -cp ./out/ path-and-class-name Below are some example to understand how this JFR can be helpful. 1. Lets consider we have created a java program in which we have used LinkList to store the elements and in same program we are using contains method inside a for loop of 1 million , in this case each time this contains method will be called then 1 million records will be sc...
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