diff -r 66722c5bc87a -r 157f39705057 hotspot/src/share/vm/gc/parallel/gcTaskThread.cpp
--- a/hotspot/src/share/vm/gc/parallel/gcTaskThread.cpp	Tue Jun 21 14:00:18 2016 +0200
+++ b/hotspot/src/share/vm/gc/parallel/gcTaskThread.cpp	Thu May 19 13:59:50 2016 -0700
@@ -45,7 +45,7 @@
   _time_stamp_index(0)
 {
   set_id(which);
-  set_name("ParGC Thread#%d", which);
+  set_name("%s#%d", manager->group_name(), which);
 }
 
 GCTaskThread::~GCTaskThread() {