--- a/hotspot/src/share/vm/gc/g1/g1ConcurrentMark.cpp	Thu May 19 11:43:21 2016 +0200
+++ b/hotspot/src/share/vm/gc/g1/g1ConcurrentMark.cpp	Thu May 19 10:48:28 2016 -0400
@@ -438,6 +438,8 @@
   }
 
   assert(ConcGCThreads > 0, "Should have been set");
+  log_debug(gc)("ConcGCThreads: %u", ConcGCThreads);
+  log_debug(gc)("ParallelGCThreads: %u", ParallelGCThreads);
   _parallel_marking_threads = ConcGCThreads;
   _max_parallel_marking_threads = _parallel_marking_threads;