anchor.diff:  
       {noreply, State#state{connections=Connections}};
   
  +handle_info(instrumentation, State) ->
  +    MessageQueueLen = process_info(self(), message_queue_len),
  +    lager:info("message_queue_len: ~p", [MessageQueueLen]),
  +    schedule_instrumentation(),
  +    {noreply, State};
  +
   handle_info(periodic, #state{pending=Pending,
                                membership_strategy=MembershipStrategy,
                                membership_strategy_state=MembershipStrategyState0,
  
positive.code:             DistanceInterval = partisan_config:get(distance_interval, 10000),
              erlang:send_after(DistanceInterval, ?MODULE, distance);
          false ->
              ok
      end.
  
  
negative.code:     %% Schedule periodic.
      schedule_periodic(),
  
      %% Schedule instrumentation.
      schedule_instrumentation(),
  
      %% Schedule distance metric.
      schedule_distance(),
  
  