--- a/src/hotspot/share/utilities/globalCounter.cpp	Tue Oct 30 14:38:59 2018 -0700
+++ b/src/hotspot/share/utilities/globalCounter.cpp	Tue Oct 30 18:06:35 2018 -0400
@@ -59,8 +59,8 @@
 void GlobalCounter::write_synchronize() {
   assert((*Thread::current()->get_rcu_counter() & COUNTER_ACTIVE) == 0x0, "must be outside a critcal section");
   // Atomic::add must provide fence since we have storeload dependency.
-  volatile uintx gbl_cnt = Atomic::add((uintx)COUNTER_INCREMENT, &_global_counter._counter,
-                                       memory_order_conservative);
+  uintx gbl_cnt = Atomic::add(COUNTER_INCREMENT, &_global_counter._counter);
+
   // Handle bootstrap
   if (Threads::number_of_threads() == 0) {
     return;