anchor.diff:  disk_log_handler_time(Config) ->
       measure_handler_time(logger_disk_log_h,#{type=>halt},Config).
   disk_log_handler_time(cleanup,_Config) ->
  +    _ = file:delete("default"),
  +    ok.
  +
  +disk_log_handler_time_big(Config) ->
  +    measure_handler_time_big(logger_disk_log_h,#{type=>halt},Config).
  +disk_log_handler_time_big(cleanup,_Config) ->
       _ = file:delete("default"),
       ok.
   
  
positive.code:      std_handler,
       disk_log_handler,
       std_handler_time,
       disk_log_handler_time,
       emulator_events,
       remote_events,
       remote_to_disk_log,
  
negative.code:         ok ->
              ok
      end.
  
  small_fa() ->
      Str = "\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
          "[\\]^_`abcdefghijklmnopqr",
      {"~ts",[Str]}.
  
  big_fa() ->
      {"~p",[lists:duplicate(1048576,"a")]}.
  
  nlogs(N) ->
      group_leader(whereis(user),self()),
  