--- old/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	2014-11-13 08:18:18.213900148 +0100
+++ new/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	2014-11-13 08:18:18.097900153 +0100
@@ -1246,8 +1246,7 @@
   }
 
   // For debugging purposes, change the type of collection.
-  // If the rotation is not on the concurrent collection
-  // type, don't start a concurrent collection.
+  // Rotate between concurrent and stop-the-world full GCs.
   NOT_PRODUCT(
     if (RotateCMSCollectionTypes) {
       return _cmsGen->debug_concurrent_cycle();