--- old/src/hotspot/share/gc/z/zStat.cpp	2020-07-23 16:59:16.550835535 +0200
+++ new/src/hotspot/share/gc/z/zStat.cpp	2020-07-23 16:59:16.434833766 +0200
@@ -1048,6 +1048,9 @@
   const double duration = (_end_of_last - _start_of_last).seconds();
   const double normalized_duration = duration * boost_factor;
   _normalized_duration.add(normalized_duration);
+
+  // Signal that we have completed a visit to all live objects.
+  Universe::heap()->next_whole_heap_examined();
 }
 
 bool ZStatCycle::is_warm() {