diff -r 6a8ccac44f41 -r 54b3b351d6f9 src/share/vm/runtime/sweeper.cpp
--- a/src/share/vm/runtime/sweeper.cpp	Fri Sep 18 09:57:47 2009 -0700
+++ b/src/share/vm/runtime/sweeper.cpp	Wed Sep 23 23:56:15 2009 -0700
@@ -136,8 +136,14 @@
     // there are no inline caches that referes to it.
     if (nm->is_marked_for_reclamation()) {
       assert(!nm->is_locked_by_vm(), "must not flush locked nmethods");
+      if (PrintMethodFlushing && Verbose) {
+        tty->print_cr("### Nmethod 0x%x (marked for reclamation) being flushed", nm);
+      }
       nm->flush();
     } else {
+      if (PrintMethodFlushing && Verbose) {
+        tty->print_cr("### Nmethod 0x%x (zombie) being marked for reclamation", nm);
+      }
       nm->mark_for_reclamation();
       _rescan = true;
     }
@@ -145,6 +151,9 @@
     // If there is no current activations of this method on the
     // stack we can safely convert it to a zombie method
     if (nm->can_not_entrant_be_converted()) {
+      if (PrintMethodFlushing && Verbose) {
+        tty->print_cr("### Nmethod 0x%x (not entrant) being made zombie", nm);
+      }
       nm->make_zombie();
       _rescan = true;
     } else {
@@ -157,7 +166,9 @@
     }
   } else if (nm->is_unloaded()) {
     // Unloaded code, just make it a zombie
-    if (nm->is_osr_only_method()) {
+    if (PrintMethodFlushing && Verbose)
+      tty->print_cr("### Nmethod 0x%x (unloaded) being made zombie", nm);
+    if (nm->is_osr_method()) {
       // No inline caches will ever point to osr methods, so we can just remove it
       nm->flush();
     } else {