Comment on MAX_DURATION value and usage

homer.py

@@ -1251,7 +1251,12 @@ for connectTo in ip_set:
             done = 0
             current = conn.pipelining_init_pending(max_in_flight)
             while done < tests:
-                if time.time() > start + MAX_DURATION:
+                if time.time() > start + MAX_DURATION: # if we send thousands of requests
+                                                       # MAX_DURATION will be reached
+                                                       # need to increase MAX_DURATION based
+                                                       # on the number of queries
+                                                       # or to define a relation such as
+                                                       # f(tests) = MAX_DURATION
                     print("Elapsed time too long, %i requests never got a reply" % (tests-done))
                     break
                 id = conn.read_result(conn, conn.pending)