--- old/src/share/vm/memory/defNewGeneration.cpp	2013-11-11 18:33:25.921484499 +0100
+++ new/src/share/vm/memory/defNewGeneration.cpp	2013-11-11 18:33:25.471467412 +0100
@@ -562,7 +562,7 @@
 
   GenCollectedHeap* gch = GenCollectedHeap::heap();
 
-  _gc_timer->register_gc_start(os::elapsed_counter());
+  _gc_timer->register_gc_start();
   DefNewTracer gc_tracer;
   gc_tracer.report_gc_start(gch->gc_cause(), _gc_timer->gc_start());
 
@@ -709,7 +709,7 @@
   gch->trace_heap_after_gc(&gc_tracer);
   gc_tracer.report_tenuring_threshold(tenuring_threshold());
 
-  _gc_timer->register_gc_end(os::elapsed_counter());
+  _gc_timer->register_gc_end();
 
   gc_tracer.report_gc_end(_gc_timer->gc_end(), _gc_timer->time_partitions());
 }