Note that this module replicates a portion of the functionality of the
port_database module.  The port_database module provides a more
thorough slicing and dicing of traffic data on various combinations of
ports and other attributes.  Unfortunately, it may not be able to
process data in real time on a network with very large throughput.

If this is the case with your network, disable the port_database
module and enable this module instead.  The "port details"
functionality will no longer be available, but top-n daily traffic
summaries will continue to be provided.
