(rabbit@t)1> [{_, Pid} | _] =
               lists:reverse(
                 lists:sort(
                   [{process_info(P, memory), P}
                    || P <- processes()])).
[{{memory,16434364},<0.160.0>}, ...]
(rabbit@t)2> process_info(Pid, dictionary).
{dictionary,
    [{'$ancestors',
      [rabbit_amqqueue_sup,rabbit_sup,<0.106.0>]},
     {'$initial_call',
      {gen,init_it,
       [gen_server,<0.138.0>,<0.138.0>,
        rabbit_amqqueue_process,
        {amqqueue,
         {resource,<<"/">>,queue,<<"test queue">>},
         false,false,[],[],none},
        []]}}]}