add PerfMon for addFlowFast()
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowDatabaseOperation.java b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowDatabaseOperation.java
index 30234b6..944991e 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowDatabaseOperation.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowDatabaseOperation.java
@@ -327,8 +327,13 @@
      * @return true on success, otherwise false.
      */
     static boolean addFlow(DBOperation dbHandler, FlowPath flowPath) {
-	if (useFastAddFlow)
-	    return addFlowFast(dbHandler, flowPath);
+	if (useFastAddFlow) {
+		PerfMon pm = PerfMon.getInstance();
+		pm.addflowpath_start();
+	    boolean retValue = addFlowFast(dbHandler, flowPath);
+		pm.addflowpath_end();
+		return retValue;
+	}
 
 	IFlowPath flowObj = null;
 	boolean found = false;