--- old/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	2013-05-06 14:07:03.000000000 -0700
+++ new/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	2013-05-06 14:07:03.000000000 -0700
@@ -2094,19 +2094,36 @@
           young_gen->from_space()->capacity_in_bytes() +
           young_gen->to_space()->capacity_in_bytes(),
           "Sizes of space in young gen are out-of-bounds");
+
+        size_t young_live = young_gen->used_in_bytes();
+        size_t eden_live = young_gen->eden_space()->used_in_bytes();
+        size_t old_live = old_gen->used_in_bytes();
+        size_t cur_eden = young_gen->eden_space()->capacity_in_bytes();
+        size_t max_old_gen_size = old_gen->max_gen_size();
         size_t max_eden_size = young_gen->max_size() -
           young_gen->from_space()->capacity_in_bytes() -
           young_gen->to_space()->capacity_in_bytes();
-        size_policy->compute_generation_free_space(
-                              young_gen->used_in_bytes(),
-                              young_gen->eden_space()->used_in_bytes(),
-                              old_gen->used_in_bytes(),
-                              young_gen->eden_space()->capacity_in_bytes(),
-                              old_gen->max_gen_size(),
-                              max_eden_size,
-                              true /* full gc*/,
-                              gc_cause,
-                              heap->collector_policy());
+
+        // Used for diagnostics
+        size_policy->clear_generation_free_space_flags();
+
+        size_policy->compute_generation_free_space(young_live,
+                                                   eden_live,
+                                                   old_live,
+                                                   cur_eden,
+                                                   max_old_gen_size,
+                                                   max_eden_size,
+                                                   true /* full gc*/);
+
+        size_policy->check_gc_overhead_limit(young_live,
+                                             eden_live,
+                                             max_old_gen_size,
+                                             max_eden_size,
+                                             true /* full gc*/,
+                                             gc_cause,
+                                             heap->collector_policy());
+
+        size_policy->decay_supplemental_growth(true /* full gc*/);
 
         heap->resize_old_gen(
           size_policy->calculated_old_free_size_in_bytes());