--- old/src/hotspot/share/runtime/sweeper.cpp	2018-11-05 20:46:24.049598453 -0500
+++ new/src/hotspot/share/runtime/sweeper.cpp	2018-11-05 20:46:22.473508551 -0500
@@ -164,8 +164,6 @@
 Tickspan NMethodSweeper::_peak_sweep_time;                     // Peak time for a full sweep
 Tickspan NMethodSweeper::_peak_sweep_fraction_time;            // Peak time sweeping one fraction
 
-Monitor* NMethodSweeper::_stat_lock = new Monitor(Mutex::special, "Sweeper::Statistics", true, Monitor::_safepoint_check_sometimes);
-
 class MarkActivationClosure: public CodeBlobClosure {
 public:
   virtual void do_code_blob(CodeBlob* cb) {
@@ -578,7 +576,7 @@
   const Ticks sweep_end_counter = Ticks::now();
   const Tickspan sweep_time = sweep_end_counter - sweep_start_counter;
   {
-    MutexLockerEx mu(_stat_lock, Mutex::_no_safepoint_check_flag);
+    MutexLockerEx mu(NMethodSweeper_stat_lock, Mutex::_no_safepoint_check_flag);
     _total_time_sweeping  += sweep_time;
     _total_time_this_sweep += sweep_time;
     _peak_sweep_fraction_time = MAX2(sweep_time, _peak_sweep_fraction_time);