--- old/src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp	2013-11-11 18:32:58.609447431 +0100
+++ new/src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp	2013-11-11 18:32:58.175430951 +0100
@@ -114,7 +114,7 @@
   assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity");
   GCCause::Cause gc_cause = heap->gc_cause();
 
-  _gc_timer->register_gc_start(os::elapsed_counter());
+  _gc_timer->register_gc_start();
   _gc_tracer->report_gc_start(gc_cause, _gc_timer->gc_start());
 
   PSAdaptiveSizePolicy* size_policy = heap->size_policy();
@@ -390,7 +390,7 @@
   ParallelTaskTerminator::print_termination_counts();
 #endif
 
-  _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());