anchor.diff:      %% Schedule periodic.
       schedule_periodic(),
   
  +    %% Schedule instrumentation.
  +    schedule_instrumentation(),
  +
       %% Schedule distance metric.
       schedule_distance(),
   
  
positive.code: 
      {noreply, State#state{connections=Connections}};
  
  handle_info(periodic, #state{pending=Pending,
                               membership_strategy=MembershipStrategy,
                               membership_strategy_state=MembershipStrategyState0,
  
negative.code:             DistanceInterval = partisan_config:get(distance_interval, 10000),
              erlang:send_after(DistanceInterval, ?MODULE, distance);
          false ->
              ok
      end.
  
  %% @private
  schedule_instrumentation() ->
      case partisan_config:get(instrumentation, false) of 
          true ->
              erlang:send_after(1000, ?MODULE, instrumentation);
          _ ->
              ok
      end.
  
  