diff --git a/plugins/task_manager/task_manager_index.py b/plugins/task_manager/task_manager_index.py
index cba95c2dc..f172e4b25 100755
--- a/plugins/task_manager/task_manager_index.py
+++ b/plugins/task_manager/task_manager_index.py
@@ -90,7 +90,7 @@ class mainClass(object):
             tmp['up_package'] = int(np_list[4])
             self.__process_net_list[tmp['pid']] = tmp
 
-        if time.time() - self.last_net_process_time > 6 or self.last_net_process_time == 0:
+        if time.time() - self.last_net_process_time > 12 or self.last_net_process_time == 0:
             self.last_net_process = copy.deepcopy(self.__process_net_list)
             self.last_net_process_time = time.time()