--- a/hotspot/src/share/vm/gc/g1/g1DefaultPolicy.cpp	Wed Jul 05 22:07:34 2017 +0200
+++ b/hotspot/src/share/vm/gc/g1/g1DefaultPolicy.cpp	Fri Aug 19 17:19:47 2016 +0200
@@ -604,7 +604,7 @@
     _analytics->report_alloc_rate_ms(alloc_rate_ms);
 
     double interval_ms =
-      (end_time_sec - _analytics->oldest_known_gc_end_time_sec()) * 1000.0;
+      (end_time_sec - _analytics->last_known_gc_end_time_sec()) * 1000.0;
     _analytics->update_recent_gc_times(end_time_sec, pause_time_ms);
     _analytics->compute_pause_time_ratio(interval_ms, pause_time_ms);
   }