diff -r 8fe2542bdc8d -r 31a4e55f8c9d src/share/vm/runtime/serviceThread.cpp
--- a/src/share/vm/runtime/serviceThread.cpp	Wed May 01 09:00:39 2013 -0700
+++ b/src/share/vm/runtime/serviceThread.cpp	Fri May 03 05:05:31 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -29,6 +29,8 @@
 #include "runtime/mutexLocker.hpp"
 #include "prims/jvmtiImpl.hpp"
 #include "services/gcNotifier.hpp"
+#include "services/diagnosticArgument.hpp"
+#include "services/diagnosticFramework.hpp"
 
 ServiceThread* ServiceThread::_instance = NULL;
 
@@ -83,6 +85,7 @@
     bool sensors_changed = false;
     bool has_jvmti_events = false;
     bool has_gc_notification_event = false;
+    bool has_dcmd_notification_event = false;
     JvmtiDeferredEvent jvmti_event;
     {
       // Need state transition ThreadBlockInVM so that this thread
@@ -98,7 +101,8 @@
       MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag);
       while (!(sensors_changed = LowMemoryDetector::has_pending_requests()) &&
              !(has_jvmti_events = JvmtiDeferredEventQueue::has_events()) &&
-              !(has_gc_notification_event = GCNotifier::has_event())) {
+              !(has_gc_notification_event = GCNotifier::has_event()) &&
+              !(has_dcmd_notification_event = DCmdFactory::has_pending_jmx_notification())) {
         // wait until one of the sensors has pending requests, or there is a
         // pending JVMTI event or JMX GC notification to post
         Service_lock->wait(Mutex::_no_safepoint_check_flag);
@@ -120,6 +124,10 @@
     if(has_gc_notification_event) {
         GCNotifier::sendNotification(CHECK);
     }
+
+    if(has_dcmd_notification_event) {
+      DCmdFactory::send_notification(CHECK);
+    }
   }
 }