--- old/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	2019-02-20 10:41:17.545014244 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	2019-02-20 10:41:17.281006180 +0100
@@ -3300,8 +3300,14 @@
         G1GCPhaseTimes* p = _g1h->g1_policy()->phase_times();
         p->add_time_secs(G1GCPhaseTimes::ObjCopy, worker_id, elapsed_sec - term_sec);
 
-        p->record_or_add_thread_work_item(G1GCPhaseTimes::ObjCopy, worker_id, pss->lab_waste(), G1GCPhaseTimes::ObjCopyLABWaste);
-        p->record_or_add_thread_work_item(G1GCPhaseTimes::ObjCopy, worker_id, pss->lab_undo_waste(), G1GCPhaseTimes::ObjCopyLABUndoWaste);
+        p->record_or_add_thread_work_item(G1GCPhaseTimes::ObjCopy,
+                                          worker_id,
+                                          pss->lab_waste_words() * HeapWordSize,
+                                          G1GCPhaseTimes::ObjCopyLABWaste);
+        p->record_or_add_thread_work_item(G1GCPhaseTimes::ObjCopy,
+                                          worker_id,
+                                          pss->lab_undo_waste_words() * HeapWordSize,
+                                          G1GCPhaseTimes::ObjCopyLABUndoWaste);
 
         p->record_time_secs(G1GCPhaseTimes::Termination, worker_id, term_sec);
         p->record_thread_work_item(G1GCPhaseTimes::Termination, worker_id, evac_term_attempts);