code: def _increase_file_handle_limit():
      
      logging.info('Increasing file handle limit to {}'.format(constants.FILE_HANDLE_LIMIT))
      resource.setrlimit(resource.RLIMIT_NOFILE,
                         (constants.FILE_HANDLE_LIMIT, resource.RLIM_INFINITY))
docs: Raise the open file handles permitted by the Dusty daemon process
      and its child processes. The number we choose here needs to be within
      the OS X default kernel hard limit, which is 10240.