Using Memory Analyzer under Linux

I. Installing the memory Analyzer Tool

Open Eclipse >> help >> Install New software >> Click the Add on the right side of work, enter

[Name]  Mat[location]  http://archive.eclipse.org/mat/1.2/update-site/  

Click OK >> Click Select All under the Install window, then continue to the next step until the end.

Two. Using Memory Analyzer

Create a Java project (just one Class), Code (class name Oomobject)

1 Importjava.util.ArrayList;2 Importjava.util.List;3 4 /**5 * Created by Foreverenjoy on 16-7-9.6  */7  Public classHeapoom {8     Static classOomobject {9 Ten     } One  A      Public Static voidMain (string[] args) { -list<oomobject> list =NewArraylist<>(); -  the          while(true) { -List.add (Newoomobject ()); -         } -     } +}

JAVA Code

To set the VM parameters in debug cofigurations:

-xms20m-xmx20m-xx:+heapdumponoutofmemoryerror

The parameter-xx:+heapdumponoutofmemoryerror allows the virtual machine to dump the current memory heap dump snapshot for post-mortem analysis when a memory overflow exception occurs.

Click Debug to run the project, which will appear

java_pid17179.hprof ... Heap dump file created [27535550 bytes in 0.099 secs]

The java_pid17179.hprof (VM dump snapshot) file can be analyzed using the memory Analyzer tool.

Click File >> Open file >> Select Java_pid17179.hprof (java_*.hprof) Under this Java project >> check leak suspecs report >> F Inish

The following is the analysis of Memory analyzer

Using Memory Analyzer under Linux