diff -r 65dba8692db7 -r 48048b59a551 src/share/vm/runtime/globals.hpp
--- a/src/share/vm/runtime/globals.hpp	Wed Jul 06 12:22:29 2011 -0700
+++ b/src/share/vm/runtime/globals.hpp	Wed Jul 06 12:28:07 2011 -0700
@@ -444,6 +444,9 @@
   product(bool, UsePPCLWSYNC, true,                                         \
           "Use lwsync instruction if true, else use slower sync")           \
                                                                             \
+  develop(bool, CleanChunkPoolAsync, falseInEmbedded,                       \
+          "Whether to clean the chunk pool asynchronously")                 \
+                                                                            \
   /* Temporary: See 6948537 */                                             \
   experimental(bool, UseMemSetInBOT, true,                                  \
           "(Unstable) uses memset in BOT updates in GC code")               \