--- old/src/share/vm/gc/parallel/psParallelCompact.cpp	2017-09-01 13:03:01.338273762 +0200
+++ new/src/share/vm/gc/parallel/psParallelCompact.cpp	2017-09-01 13:03:01.206268516 +0200
@@ -1779,7 +1779,7 @@
     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();
@@ -1898,7 +1898,7 @@
     // Resize the metaspace capacity after a collection
     MetaspaceGC::compute_new_size();
 
-    if (TraceOldGenTime) {
+    if (log_is_enabled(Debug, gc, heap, exit)) {
       accumulated_time()->stop();
     }