diff --git a/jobmanager.py b/jobmanager.py
index 7519e3e..2a58135 100644
--- a/jobmanager.py
+++ b/jobmanager.py
@@ -1109,9 +1109,18 @@ class JobManager_Client(object):
 
         self.procs = []
         
+        self.manager_objects = self.get_manager_objects() 
+        
+       
+    def get_manager_objects(self):
+        return JobManager_Client._get_manager_objects(self.server, 
+                                                      self.port, 
+                                                      self.authkey, 
+                                                      self._identifier,
+                                                      self.verbose)
        
     @staticmethod
-    def _get_manager_object(server, port, authkey, identifier, verbose=0):
+    def _get_manager_objects(server, port, authkey, identifier, verbose=0):
         """
         connects to the server and get registered shared objects such as
         job_q, result_q, fail_q, const_arg
@@ -1174,20 +1183,21 @@ class JobManager_Client(object):
 
 
     @staticmethod
-    def __worker_func(func, nice, verbose, server, port, authkey, i):
+    def __worker_func(func, nice, verbose, server, port, authkey, i, manager_objects=None):
         """
         the wrapper spawned nproc trimes calling and handling self.func
         """
         identifier = get_identifier(name='worker{}'.format(i+1))
         Signal_to_sys_exit(signals=[signal.SIGTERM, signal.SIGINT])
-        
-        res = JobManager_Client._get_manager_object(server, port, authkey, identifier, verbose)
-        if res == None:
-            if verbose > 1:
-                print("{}: no shared object recieved, terminate!".format(identifier))
-            sys.exit(1)
-        else:
-            job_q, result_q, fail_q, const_arg = res 
+
+        if manager_objects is None:        
+            manager_objects = JobManager_Client._get_manager_object(server, port, authkey, identifier, verbose)
+            if res == None:
+                if verbose > 1:
+                    print("{}: no shared object recieved, terminate!".format(identifier))
+                sys.exit(1)
+
+        job_q, result_q, fail_q, const_arg = manager_objects 
         
         n = os.nice(0)
         n = os.nice(nice - n)
@@ -1266,8 +1276,10 @@ class JobManager_Client(object):
                     print("        continue processing next argument.")
                 
         if verbose > 0:
-            print("{}: calculation:{:.2%} communication:{:.2%}".format(identifier, time_calc/(time_calc+time_queue), time_queue/(time_calc+time_queue)))
-            
+            try:
+                print("{}: calculation:{:.2%} communication:{:.2%}".format(identifier, time_calc/(time_calc+time_queue), time_queue/(time_calc+time_queue)))
+            except:
+                pass
         if verbose > 1:
             print("{}: JobManager_Client.__worker_func terminates".format(identifier))
         
@@ -1289,7 +1301,8 @@ class JobManager_Client(object):
                                                             self.server, 
                                                             self.port,
                                                             self.authkey,
-                                                            i))
+                                                            i,
+                                                            self.manager_objects))
             self.procs.append(p)
             p.start()
             time.sleep(0.3)
diff --git a/test_jobmanager.py b/test_jobmanager.py
index 97f2fb5..3fb5761 100644
--- a/test_jobmanager.py
+++ b/test_jobmanager.py
@@ -518,7 +518,7 @@ def shutdown_client(sig):
     check if the final_result contain all arguments given 
     """
     
-    n = 100
+    n = 300
     
     print("## terminate client with {} ##".format(jobmanager.signal_dict[sig]))
     
@@ -530,7 +530,7 @@ def shutdown_client(sig):
     p_client = mp.Process(target=start_client)
     p_client.start()
     
-    time.sleep(1)
+    time.sleep(5)
     
     print("    send {}".format(jobmanager.signal_dict[sig]))
     os.kill(p_client.pid, sig)
@@ -746,28 +746,28 @@ def test_hashedViewOnNumpyArray():
 
 if __name__ == "__main__":
     
-    test_Signal_to_SIG_IGN()
-    test_Signal_to_sys_exit()
-    test_Signal_to_terminate_process_list()
-       
-    test_loop_basic()
-    test_loop_signals()
-    test_loop_normal_stop()
-    test_loop_need_sigterm_to_stop()
-    test_loop_need_sigkill_to_stop()
-     
-    test_why_with_statement()
+#     test_Signal_to_SIG_IGN()
+#     test_Signal_to_sys_exit()
+#     test_Signal_to_terminate_process_list()
+#        
+#     test_loop_basic()
+#     test_loop_signals()
+#     test_loop_normal_stop()
+#     test_loop_need_sigterm_to_stop()
+#     test_loop_need_sigkill_to_stop()
+#      
+#     test_why_with_statement()
+#       
+#     test_statusbar()
+#     test_statusbar_with_statement()
       
-    test_statusbar()
-    test_statusbar_with_statement()
-      
-    test_jobmanager_basic()
-    test_jobmanager_server_signals()
-    test_shutdown_server_while_client_running()
+#     test_jobmanager_basic()
+#     test_jobmanager_server_signals()
+#     test_shutdown_server_while_client_running()
     test_shutdown_client()
-    test_check_fail()
-    test_jobmanager_read_old_stat()
-    test_hashDict()
-    test_hashedViewOnNumpyArray()
+#     test_check_fail()
+#     test_jobmanager_read_old_stat()
+#     test_hashDict()
+#     test_hashedViewOnNumpyArray()
     pass
     
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