How can I analyze a heap dump in IntelliJ memory leak

Question

I have generated a heap dump from my java application which has been running for some days with the jmap tool -  this results in a large binary heap dump file   How can I perform memory analysis of this heap dump within IntellIJ IDEA   I know that there are tools for Eclipse and Netbeans but I would rather use IDEA if possible   The basic results of the analysis would tell me the number of instances of each object in memory  per-class  to allow me to be able to start debugging memory leaks

User · Accepted Answer

The best thing out there is Memory Analyzer  MAT   IntelliJ does not have any bundled heap dump analyzer

User · Answer

You can install the JVisualVM plugin from here  https   plugins jetbrains com plugin 3749 pr   This will allow you to analyse the dump within the plugin

User · Answer

You can also use VisualVM Launcher to launch VisualVM from within IDEA  https   plugins jetbrains com plugin 7115 pr idea I personally find this more convenient

User · Answer

I would like to update the answers above to 2018 and say to use both VisualVM and Eclipse MAT   How to use   VisualVM is used for live monitoring and dump heap  You can also analyze the heap dumps there with great power  however MAT have more capabilities  such as automatic analysis to find leaks  and therefore  I read the VisualVM dump output   hprof file  into MAT       Get VisualVM   Download VisualVM here  https   visualvm github io   You also need to download the plugin for Intellij    Then you ll see in intellij another 2 new orange icons    Once you run your app with an orange one  in VisualVM you ll see your process on the left  and data on the right  Sit some time and learn this tool  it is very powerful        Get Eclipse s Memory Analysis Tool  MAT  as a standalone   Download here  https   www eclipse org mat downloads php  And this is how it looks     Hope it helps

User · Answer

There also exists a  JVM Debugger Memory View  found in the plugin repository  which could be useful

User · Answer

VisualVM plugin for Intellij Idea

User · Answer

You can just run  Java VisualVM  which is located at jdk bin jvisualvm exe  This will open a GUI  use the  File  menu -   Load     then choose your   hprof file  That s it  you re done

[java] How can I analyze a heap dump in IntelliJ? (memory leak)

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