diff --git a/src/service/service/task_scheduler/TaskScheduler.py b/src/service/service/task_scheduler/TaskScheduler.py
index f55527e4756022fc4941605f54ab82b74c0937f0..fbc554aa261cbc68009258d322aa01d52bfe760d 100644
--- a/src/service/service/task_scheduler/TaskScheduler.py
+++ b/src/service/service/task_scheduler/TaskScheduler.py
@@ -130,7 +130,7 @@ class TasksScheduler:
                 self._dag.add(connection_key, service_key_done)
 
         t1 = time.time()
-        LOGGER.info('[compose_from_pathcompreply] elapsed_time: {:f} sec'.format(t1-t0))
+        LOGGER.debug('[compose_from_pathcompreply] elapsed_time: {:f} sec'.format(t1-t0))
 
     def compose_from_service(self, service : Service, is_delete : bool = False) -> None:
         t0 = time.time()
@@ -196,11 +196,11 @@ class TasksScheduler:
                 raise Exception(MSG.format(type(item).__name__, grpc_message_to_json_string(item)))
 
         t1 = time.time()
-        LOGGER.info('[compose_from_service] elapsed_time: {:f} sec'.format(t1-t0))
+        LOGGER.debug('[compose_from_service] elapsed_time: {:f} sec'.format(t1-t0))
 
     def execute_all(self, dry_run : bool = False) -> None:
         ordered_task_keys = list(self._dag.static_order())
-        LOGGER.info('[execute_all] ordered_task_keys={:s}'.format(str(ordered_task_keys)))
+        LOGGER.debug('[execute_all] ordered_task_keys={:s}'.format(str(ordered_task_keys)))
 
         results = []
         for task_key in ordered_task_keys:
@@ -208,5 +208,5 @@ class TasksScheduler:
             succeeded = True if dry_run else task.execute()
             results.append(succeeded)
 
-        LOGGER.info('[execute_all] results={:s}'.format(str(results)))
+        LOGGER.debug('[execute_all] results={:s}'.format(str(results)))
         return zip(ordered_task_keys, results)