src/share/vm/gc/g1/g1CollectedHeap.cpp

rev 10335 : imported patch 8147121-plab-statistics-added-too-late
rev 10336 : [mq]: 8141141-young-and-old-gen-stats-are-similar-in-output

@@ -1758,12 +1758,12 @@
   _archive_allocator(NULL),
   _free_regions_coming(false),
   _young_list(new YoungList(this)),
   _gc_time_stamp(0),
   _summary_bytes_used(0),
-  _survivor_evac_stats(YoungPLABSize, PLABWeight),
-  _old_evac_stats(OldPLABSize, PLABWeight),
+  _survivor_evac_stats("Young", YoungPLABSize, PLABWeight),
+  _old_evac_stats("Old", OldPLABSize, PLABWeight),
   _expand_heap_after_alloc_failure(true),
   _old_marking_cycles_started(0),
   _old_marking_cycles_completed(0),
   _heap_summary_sent(false),
   _in_cset_fast_test(),