--- old/src/share/vm/gc/parallel/psMarkSweep.cpp	2016-05-06 09:46:14.770658200 +0900
+++ new/src/share/vm/gc/parallel/psMarkSweep.cpp	2016-05-06 09:46:14.723658200 +0900
@@ -65,6 +65,9 @@
   MemRegion mr = ParallelScavengeHeap::heap()->reserved_region();
   set_ref_processor(new ReferenceProcessor(mr));     // a vanilla ref proc
   _counters = new CollectorCounters("PSMarkSweep", 1);
+
+  // Dummy counter
+  new CollectorCounters("dummy", 2);
 }
 
 // This method contains all heap specific policy for invoking mark sweep.