--- old/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	2018-09-05 06:35:11.809322944 -0700
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	2018-09-05 06:35:11.405284423 -0700
@@ -2900,10 +2900,15 @@
     active_workers = workers()->update_active_workers(active_workers);
     log_info(gc,task)("Using %u workers of %u for evacuation", active_workers, workers()->total_workers());
 
-    G1MonitoringScope ms(g1mm(),
-                         false /* full_gc */,
-                         collector_state()->yc_type() == Mixed /* all_memory_pools_affected */);
-
+    if(gc_cause() == GCCause::_java_lang_system_gc) {
+        G1MonitoringScope ms(g1mm(),
+                             true /* full_gc */,
+                             collector_state()->yc_type() == Mixed /* all_memory_pools_affected */);
+    } else {
+        G1MonitoringScope ms(g1mm(),
+                             false /* full_gc */,
+                             collector_state()->yc_type() == Mixed /* all_memory_pools_affected */);
+    }
     G1HeapTransition heap_transition(this);
     size_t heap_used_bytes_before_gc = used();