title: Why Major Garbage collection is slower than Minor?
body: <p>Gone thru this <a href="http://www.oracle.com/webfolder/technetwork/tutorials/obe/java/gc01/index.html" rel="noreferrer">link</a> but still
  has confusion what actually happens in minor and major GC collection.</p>
  
  <p>Say i have 100 objects in younger generation out of which 85 object are unreachabe objects. Now when Minor GC runs,
  it will reclaim the memory of 85 objects and move 15 objects to older(tenured) generation. </p>
  
  <p>Now 15 live objects exists in older generation out of which 3 are unreachable. Say Major GC takes places.  It will keep
  15 objects as it is and reclaim the memory for 3 unreachable object. Major GC is said to be slower than minor GC. <code>My question is why ? Is it because of major GC happens on generally greater number of objects than minor as minor gc occurs more frequently than major?</code> </p>
  
  <p>As per understanding <code>major GC should be faster as it needs to do less work</code> i.e reclaiming memory from unreachable objects than minor GC because
  high mortality rate in young generation. </p>