When MULTOPS has more memory at its disposal, it can expand to deeper levels, thereby increasing its precision. Dropping packets based on disproportional packet rates in a record in the root node will affect many machines, i.e., all machines with a common first byte in their IP address. If, however, dropping packets is done based on disproportional packet rates from/to a single IP address--stored in the deepest level of the tree--then only the machine with that IP address will be affected. It is, therefore, important to not restrict MULTOPS' memory use too much.