Java Performance

How to check the Memory used by Java


class CheckMemory{
   public static void main(String[] a) {
      Runtime rt = Runtime.getRuntime();
      System.out.println(" Free memory: " + rt.freeMemory());
      System.out.println("Total memory: " + rt.totalMemory());
      while (true);
   }
}


To cehck its usage at Client and Serverside run them like:-




Client Side - JVM Usage:-


C:\>\progra~1\java\jdk1.6.0_02\bin\java LongWhile
 Free memory: 4997088
Total memory: 5177344



ServerSide JVM usage:-


C:\>\progra~1\java\jdk1.6.0_02\bin\java -server LongWhile
 Free memory: 4997088
Total memory: 5177344




































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