--- old/src/share/vm/gc/parallel/psMarkSweep.cpp	2017-09-01 13:03:00.722249283 +0200
+++ new/src/share/vm/gc/parallel/psMarkSweep.cpp	2017-09-01 13:03:00.570243242 +0200
@@ -174,7 +174,7 @@
     TraceCollectorStats tcs(counters());
     TraceMemoryManagerStats tms(true /* Full GC */,gc_cause);
 
-    if (TraceOldGenTime) accumulated_time()->start();
+    if (log_is_enabled(Debug, gc, heap, exit)) accumulated_time()->start();
 
     // Let the size policy know we're starting
     size_policy->major_collection_begin();
@@ -343,7 +343,7 @@
     // We collected the heap, recalculate the metaspace capacity
     MetaspaceGC::compute_new_size();
 
-    if (TraceOldGenTime) accumulated_time()->stop();
+    if (log_is_enabled(Debug, gc, heap, exit)) accumulated_time()->stop();
 
     young_gen->print_used_change(young_gen_prev_used);
     old_gen->print_used_change(old_gen_prev_used);