title: Serial Mark-Sweep-Compact (PSOldGen) PS stands for?
body: <p>When I searched for PSOldGen garbage collector which I saw in the gc log, I found out that it is Serial Mark-Sweep-Compact. If this gc is serial, what does PS in PSOldGen stand for? AFAIK it is Parallel scavenge. But this confuses me.</p>
  
  <pre><code>[Full GC [PSYoungGen: 647K-&gt;0K(60352K)] [PSOldGen: 45361K-&gt;45875K(54528K)] 46008K-&gt;45875K(114880K) [PSPermGen: 10201K-&gt;10201K(21248K)], 0.0359430 secs]
  </code></pre>