Eclipse Mat Analysis Heap Dump

Official Reference Document: Http://help.eclipse.org/juno/index.jsp?topic=%2Forg.eclipse.mat.ui.help%2Ftasks%2Fanalyzingthreads.html code

/** * -XX:+PrintGC -Xloggc:gc.log *  * VM args: -Xms20m -Xmx20m -XX:+HeapDumpOnOutOfMemoryError */public class HeapOOM {static class OOMObject {}   public   Static  void   main   ( string  []   )  throws  interruptedexception  { List<OOMObject> list = new ArrayList<>();while(true){list.add(new OOMObject());//System.out.println("sleep");//Thread.sleep(1000l);} }

The left is the console output, and the right is the heap dump to analyze the thread information.

Figure II

                                                                                     Figure III OQL instancesSELECT s.size, S.modcount from OBJECTS 258211 s Figure IV: Results

Eclipse Mat Analysis Heap Dump