Yconalyzer is a low-overhead pcap utility that provides a bird's eye view of traffic on a particular TCP port, displaying a distribution of duration, volume and throughput over all connections while being able to narrow down to a connection as well.
Details of connections in a particular bucket
Connections in which clients send more than 300 bytes
Connections bucketized by client volume
Connections sorted by throughput
Generic output from a pcap file or live monitoring
Connections in which server sends less than 300 bytes