--- old/src/hotspot/share/runtime/serviceThread.cpp	2019-07-08 11:17:35.000000000 -0700
+++ new/src/hotspot/share/runtime/serviceThread.cpp	2019-07-08 11:17:34.000000000 -0700
@@ -37,10 +37,6 @@
 #include "runtime/os.hpp"
 #include "prims/jvmtiImpl.hpp"
 #include "prims/resolvedMethodTable.hpp"
-#include "services/diagnosticArgument.hpp"
-#include "services/diagnosticFramework.hpp"
-#include "services/gcNotifier.hpp"
-#include "services/lowMemoryDetector.hpp"
 
 ServiceThread* ServiceThread::_instance = NULL;
 
@@ -117,10 +113,7 @@
   const size_t oopstorage_count = ARRAY_SIZE(oopstorages);
 
   while (true) {
-    bool sensors_changed = false;
     bool has_jvmti_events = false;
-    bool has_gc_notification_event = false;
-    bool has_dcmd_notification_event = false;
     bool stringtable_work = false;
     bool symboltable_work = false;
     bool resolved_method_table_work = false;
@@ -144,10 +137,7 @@
       // only the first recognized bit of work, to avoid frequently true early
       // tests from potentially starving later work.  Hence the use of
       // arithmetic-or to combine results; we don't want short-circuiting.
-      while (((sensors_changed = LowMemoryDetector::has_pending_requests()) |
-              (has_jvmti_events = JvmtiDeferredEventQueue::has_events()) |
-              (has_gc_notification_event = GCNotifier::has_event()) |
-              (has_dcmd_notification_event = DCmdFactory::has_pending_jmx_notification()) |
+      while (((has_jvmti_events = JvmtiDeferredEventQueue::has_events()) |              
               (stringtable_work = StringTable::has_work()) |
               (symboltable_work = SymbolTable::has_work()) |
               (resolved_method_table_work = ResolvedMethodTable::has_work()) |
@@ -178,18 +168,6 @@
       jvmti_event.post();
     }
 
-    if (sensors_changed) {
-      LowMemoryDetector::process_sensor_changes(jt);
-    }
-
-    if(has_gc_notification_event) {
-      GCNotifier::sendNotification(CHECK);
-    }
-
-    if(has_dcmd_notification_event) {
-      DCmdFactory::send_notification(CHECK);
-    }
-
     if (resolved_method_table_work) {
       ResolvedMethodTable::do_concurrent_work(jt);
     }