--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp	Thu Apr 18 10:09:23 2013 -0700
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp	Tue Feb 12 14:15:45 2013 -0800
@@ -177,7 +177,7 @@
     size_t prev_used = heap->used();
 
     // Capture metadata size before collection for sizing.
-    size_t metadata_prev_used = MetaspaceAux::used_in_bytes();
+    size_t metadata_prev_used = MetaspaceAux::allocated_used_bytes();
 
     // For PrintGCDetails
     size_t old_gen_prev_used = old_gen->used_in_bytes();
@@ -238,6 +238,7 @@
 
     // Delete metaspaces for unloaded class loaders and clean up loader_data graph
     ClassLoaderDataGraph::purge();
+    MetaspaceAux::verify_metrics();
 
     BiasedLocking::restore_marks();
     Threads::gc_epilogue();