--- old/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	2013-11-11 18:33:00.943536059 +0100
+++ new/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	2013-11-11 18:33:00.470518098 +0100
@@ -2006,7 +2006,7 @@
 
   ParallelScavengeHeap* heap = gc_heap();
 
-  _gc_timer.register_gc_start(os::elapsed_counter());
+  _gc_timer.register_gc_start();
   _gc_tracer.report_gc_start(heap->gc_cause(), _gc_timer.gc_start());
 
   TimeStamp marking_start;
@@ -2244,7 +2244,7 @@
   ParallelTaskTerminator::print_termination_counts();
 #endif
 
-  _gc_timer.register_gc_end(os::elapsed_counter());
+  _gc_timer.register_gc_end();
 
   _gc_tracer.report_dense_prefix(dense_prefix(old_space_id));
   _gc_tracer.report_gc_end(_gc_timer.gc_end(), _gc_timer.time_partitions());