anchor.diff:  
   %% @doc Message handler when the rm_loop module is fully initialized.
   -spec on(message(), state()) -> state().
  -on({init}, State) ->
  -    % prefer timer:send_interval/2:
  -    case timer:send_interval(get_bench_interval() * 1000, {bench}) of
  -        {ok, _TRef} -> ok;
  -        {error, Reason} ->
  -            log:log(warn, "timer:send_interval/2 failed: ~p", [Reason]),
  -            msg_delay:send_local(get_bench_interval(), self(), {init})
  -    end,
  -    run_bench(),
  -    State;
   on({bench}, State) ->
  +    msg_delay:send_local(get_bench_interval(), self(), {bench}),
       run_bench(),
       State.
   
  
positive.code: -spec init(null) -> state().
  init(null) ->
      FirstDelay = randoms:rand_uniform(1, get_bench_interval() + 1),
      msg_delay:send_local(FirstDelay, self(), {init}),
      null.
  
  %% @doc Checks whether config parameters of the rm_tman process exist and are
  
negative.code: -export([start_link/1, init/1, on/2, check_config/0]).
  
  -type state() :: null.
  -type message() :: {bench}.
  
  -spec run_bench() -> ok.
  run_bench() ->
  