--- old/src/share/vm/memory/tenuredGeneration.cpp	2014-12-05 16:00:46.901529295 +0100
+++ new/src/share/vm/memory/tenuredGeneration.cpp	2014-12-05 16:00:46.833529298 +0100
@@ -389,8 +389,6 @@
 
 
 void TenuredGeneration::gc_epilogue(bool full) {
-  _last_gc = WaterMark(the_space(), the_space()->top());
-
   // update the generation and space performance counters
   update_counters();
   if (ZapUnusedHeapArea) {