--- a/src/hotspot/share/runtime/serviceThread.cpp	Thu Jun 07 06:27:09 2018 -0400
+++ b/src/hotspot/share/runtime/serviceThread.cpp	Thu Jun 07 14:11:56 2018 +0200
@@ -23,6 +23,7 @@
  */
 
 #include "precompiled.hpp"
+#include "classfile/stringTable.hpp"
 #include "runtime/interfaceSupport.inline.hpp"
 #include "runtime/javaCalls.hpp"
 #include "runtime/serviceThread.hpp"
@@ -82,6 +83,7 @@
     bool has_gc_notification_event = false;
     bool has_dcmd_notification_event = false;
     bool acs_notify = false;
+    bool stringtable_work = false;
     JvmtiDeferredEvent jvmti_event;
     {
       // Need state transition ThreadBlockInVM so that this thread
@@ -98,7 +100,8 @@
       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())) {
+              !(has_dcmd_notification_event = DCmdFactory::has_pending_jmx_notification()) &&
+              !(stringtable_work = StringTable::has_work())) {
         // 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);
@@ -109,6 +112,10 @@
       }
     }
 
+    if (stringtable_work) {
+      StringTable::do_concurrent_work(jt);
+    }
+
     if (has_jvmti_events) {
       jvmti_event.post();
     }