--- old/src/hotspot/share/gc/g1/g1CollectionSet.cpp	2019-11-20 13:19:50.417310685 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectionSet.cpp	2019-11-20 13:19:50.081300286 +0100
@@ -245,10 +245,10 @@
   hr->set_recorded_rs_length(new_rs_length);
   _inc_recorded_rs_length_diff += rs_length_diff;
 
-  double old_elapsed_time_ms = hr->predicted_non_copy_time_ms();
-  double new_region_elapsed_time_ms = predict_region_non_copy_time_ms(hr);
-  double non_copy_time_ms_diff = new_region_elapsed_time_ms - old_elapsed_time_ms;
-  hr->set_predicted_non_copy_time_ms(new_region_elapsed_time_ms);
+  double old_non_copy_time = hr->predicted_non_copy_time_ms();
+  double new_non_copy_time = predict_region_non_copy_time_ms(hr);
+  double non_copy_time_ms_diff = new_non_copy_time - old_non_copy_time;
+  hr->set_predicted_non_copy_time_ms(new_non_copy_time);
   _inc_predicted_non_copy_time_ms_diff += non_copy_time_ms_diff;
 }