--- old/src/hotspot/share/runtime/thread.cpp	2018-09-07 14:09:14.763013278 -0700
+++ new/src/hotspot/share/runtime/thread.cpp	2018-09-07 14:09:14.563013285 -0700
@@ -4736,7 +4736,6 @@
   }
 
   // Slow-path : We've encountered contention -- Spin/Yield/Block strategy.
-  TEVENT(SpinAcquire - ctx);
   int ctr = 0;
   int Yields = 0;
   for (;;) {
@@ -4831,7 +4830,6 @@
     return;
   }
 
-  TEVENT(muxAcquire - Contention);
   ParkEvent * const Self = Thread::current()->_MuxEvent;
   assert((intptr_t(Self) & LOCKBIT) == 0, "invariant");
   for (;;) {
@@ -4877,7 +4875,6 @@
     return;
   }
 
-  TEVENT(muxAcquire - Contention);
   ParkEvent * ReleaseAfter = NULL;
   if (ev == NULL) {
     ev = ReleaseAfter = ParkEvent::Allocate(NULL);