anchor.diff:  % 3,758,096,384  bucket-7   [3,2,1] -> [3,1,4]
   % 4,264,647,116   NODE3(1)
   
  -test1() -> [].
  -test1(_Conf) ->
  +test_hash() -> [].
  +test_hash(_Conf) ->
       kai_config:start_link([
           {hostname, "localhost"},
           {rpc_port, 11011},
  
positive.code: -include("kai.hrl").
  -include("kai_test.hrl").
  
  all() -> [test1, test2].
  
  % Hash ring of test1:
  %
  
negative.code:     kai_hash:stop(),
      kai_config:stop().
  
  test_hash_efficiency() -> [].
  test_hash_efficiency(_Conf) ->
      io:format("simulate network of 64 nodes"),
  
      kai_config:start_link([
  