anchor.diff:              NewSize = min(round(BS*2), MaxBS),
               application:set_env(?CLUSTER_WORKER_APP_NAME,
                   couchbase_pool_batch_size, NewSize),
  -            ?info("Increase batch size to: ~p", NewSize),
  +            ?info("Increase batch size to: ~p", [NewSize]),
               save_modify_batch_size_time();
           _ ->
               ok
  
positive.code:             NewSize = max(round(BS/2), MinBS),
              application:set_env(?CLUSTER_WORKER_APP_NAME,
                  couchbase_pool_batch_size, NewSize),
              ?info("Decrease batch size to: ~p", NewSize),
              save_modify_batch_size_time();
          _ ->
              ok
  
negative.code:         _ -> 0
      end,
  
      MinDiff = (?OP_TIMEOUT + ?DUR_TIMEOUT) / 1000,
      (os:system_time(seconds) - LastMod) > MinDiff.
  
  %%--------------------------------------------------------------------
  