--- a/src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.cpp	Thu Oct 10 10:48:31 2019 -0700
+++ b/src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.cpp	Thu Oct 10 21:54:53 2019 +0200
@@ -366,8 +366,10 @@
   // Rebuild free set
   free_set->rebuild();
 
-  log_info(gc, ergo)("Collectable Garbage: " SIZE_FORMAT "M, " SIZE_FORMAT "M CSet, " SIZE_FORMAT " CSet regions",
-                     collection_set->garbage() / M, collection_set->live_data() / M, collection_set->count());
+  log_info(gc, ergo)("Collectable Garbage: " SIZE_FORMAT "%s, " SIZE_FORMAT "%s CSet, " SIZE_FORMAT " CSet regions",
+                     byte_size_in_proper_unit(collection_set->garbage()),   proper_unit_for_byte_size(collection_set->garbage()),
+                     byte_size_in_proper_unit(collection_set->live_data()), proper_unit_for_byte_size(collection_set->live_data()),
+                     collection_set->count());
 }
 
 void ShenandoahTraversalGC::init_traversal_collection() {