anchor.diff:                                 {PerfRR2, PerfLH2, rrd:timing_with_hist_merge_fun(0, PerfTX2, PerfTX3)}
                          end, {PerfRR1, PerfLH1, PerfTX1}, Data1)
                end, {undefined, undefined, undefined}, Msgs),
  -    
  +
       Msg = {?send_to_registered_proc, monitor_perf,
              {gather_stats_response, [{?MODULE, 'read_read', PerfRR},
                                       {dht_node, 'lookup_hops', PerfLH},
  
positive.code:     % if sending the reply from bulkowner gather fails
      bulkowner:send_reply_failed(Id, Target, BMsg, Parents, self(), FailedTarget),
      State;
  
  on({bulkowner, reply, Id, {gather_stats_response, DataL}} = _Msg,
     {AllNodes, Leader, BenchPid, IgnBenchT} = _State)
  
negative.code:       ?MODULE, 'mem_binary', rrd:create(15 * 1000000, 1, gauge)),
      monitor:monitor_set_value(
        ?MODULE, 'mem_ets', rrd:create(15 * 1000000, 1, gauge)),
  
      monitor:monitor_set_value(
        ?MODULE, 'rcv_count', rrd:create(15 * 1000000, 1, gauge)),
      monitor:monitor_set_value(
  