title: PS MarkSweep is which garbage collector
body: <p>My jdk version is :</p>
  
  <pre><code>java version "1.8.0_102"
  
  Java(TM) SE Runtime Environment (build 1.8.0_102-b14)
  
  Java HotSpot(TM) 64-Bit Server VM (build 25.102-b14, mixed mode)
  </code></pre>
  
  <p>this is my test code :</p>
  
  <pre><code>List&lt;GarbageCollectorMXBean&gt; beans = ManagementFactory.getGarbageCollectorMXBeans();
  
      for (GarbageCollectorMXBean bean : beans) {
          System.out.println(bean.getName());
      }
  </code></pre>
  
  <p>result is :</p>
  
  <pre><code>PS Scavenge
  
  PS MarkSweep
  </code></pre>
  
  <p>I know PS Scavenge is "Parallel Scavenge" of young generation garbage collector, "PS MarkSweep" is which, is it "Parallel Old"? </p>