diff -r af2ab04e0038 -r 3bddbf0f57d6 src/share/vm/gc_implementation/g1/g1_globals.hpp
--- a/src/share/vm/gc_implementation/g1/g1_globals.hpp	Thu Sep 08 16:29:41 2011 +0200
+++ b/src/share/vm/gc_implementation/g1/g1_globals.hpp	Fri Sep 09 05:20:58 2011 -0400
@@ -134,9 +134,9 @@
   develop(bool, G1RSCountHisto, false,                                      \
           "If true, print a histogram of RS occupancies after each pause")  \
                                                                             \
-  product(bool, G1PrintRegionLivenessInfo, false,                           \
-          "Prints the liveness information for all regions in the heap "    \
-          "at the end of a marking cycle.")                                 \
+  diagnostic(bool, G1PrintRegionLivenessInfo, false,                        \
+            "Prints the liveness information for all regions in the heap "  \
+            "at the end of a marking cycle.")                               \
                                                                             \
   develop(bool, G1PrintParCleanupStats, false,                              \
           "When true, print extra stats about parallel cleanup.")           \