title: GC dump analysis using GCViewer
body: <p>I am analyzing my gc log using GCviewer. I couldn't get better tutorial to understand the GCviewer option. kindly explain me the below option and share me the GCViewer tutorails.</p>
  
  <p>I found below mentioned option in Memory tab of GCViewer</p>
  
  <pre><code>Total heap(useage/alloc. max) 1,956.9M(95.7%) /2,044M 
   1. Is it current status of my heap size or maxmium reached heap size?  
  
  Tenured heap (useage/alloc. max) 1,355M/1,060M 
   2. what is Tenured heap?
  
   3.What is Young Heap?
   4. Avg after full GC?
   5. Freed by Full GC?
   6. Freed by GC?
   7. Avg promotion?
   8. Total Promotion?
  </code></pre>