code: def generate_start_command(server, options_override=None, standalone=False):
      
      command = []
  
      if mongod_needs_numactl():
          log_info("Running on a NUMA machine...")
          command = apply_numactl(command)
  
      # append the mongod executable
      command.append(get_server_executable(server))
  
      # create the command args
      cmd_options = server.export_cmd_options(options_override=options_override,
                                              standalone=standalone)
  
      command.extend(options_to_command_args(cmd_options))
      return command
docs: Check if we need to use numactl if we are running on a NUMA box.
          10gen recommends using numactl on NUMA. For more info, see
          http://www.mongodb.org/display/DOCS/NUMA