--- old/src/share/vm/runtime/perfMemory.cpp	2016-03-14 23:23:22.640553194 +0900
+++ new/src/share/vm/runtime/perfMemory.cpp	2016-03-14 23:23:22.471553850 +0900
@@ -196,12 +196,6 @@
     //
     delete_memory_region();
   }
-
-  _start = NULL;
-  _end = NULL;
-  _top = NULL;
-  _prologue = NULL;
-  _capacity = 0;
 }
 
 // allocate an aligned block of memory from the PerfData memory