https://github.com/apache/airflow/blob/main/airflow/dag_processing/manager.py#L773
dag_directory: os.PathLike,
        max_runs: int,
        processor_timeout: timedelta,
        signal_conn: MultiprocessingConnection,
        dag_ids: list[str] | None,
        pickle_dags: bool,
        async_mode: bool,
    ) -> None:
        
        
        
        set_new_process_group()
        setproctitle("airflow scheduler -- DagFileProcessorManager")