--- old/src/share/vm/services/diagnosticCommand.cpp	2015-01-27 20:46:19.684776200 +0900
+++ new/src/share/vm/services/diagnosticCommand.cpp	2015-01-27 20:46:19.282776200 +0900
@@ -267,7 +267,7 @@
 
 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
   if (!DisableExplicitGC) {
-    Universe::heap()->collect(GCCause::_java_lang_system_gc);
+    Universe::heap()->collect(GCCause::_dcmd_gc_run);
   } else {
     output()->print_cr("Explicit GC is disabled, no GC has been performed.");
   }