Top Talkers

The built-in Top Talkers view Layout for Chart provides a summary of the endpoint conversation address pairs that had the top message volume and payload bytes values in a set of trace results. This Layout also displays additional statistics that provide an indication of the data transmission rate and the distribution of network busyness with respect to traffic volume and duration for each endpoint address pair. The summary data is contained in a Table grid visualizer component that provides endpoint address pairs, message and byte count, and other traffic details in a column layout that is tailored to provide statistics that are useful for analysis. The grid data is sorted in descending order from the highest to lowest message count and by highest to lowest payload byte count. The Layout contains the following data columns:

• AddressPair — values in this column specify the endpoint address set for which traffic statistics are generated.

• Count — values in this column specify the total volume of messages for each endpoint address.

• Bytes — based on the payloadLength property of any module that defines this field, the values in this column specify the total payload byte volume of all messages (containing this property) that are associated with each endpoint address.

• KBPS — provides an indication of the data transmission rate in kilobytes per second.

• Duration — specifies the delta between the Start and End time values.

• Start — specifies the time at which the first message in an endpoint address pair set began.

• End— specifies the time at which the last message in an endpoint address pair set ended.

• K — a chart constant to facilitate calculation of the KBPS values.

• BPS — provides an indication of the data transmission rate in bytes per second.

Using the Top Talkers Layout

To enable you to focus on message volume and payload byte count at different layers, you can set a Viewpoint such as TCP or Ethernet. To apply a Viewpoint, click the Viewpoint drop-down list on the Filtering toolbar and then select the TCP or Ethernet item. You will notice that values such as the message count, payload byte count, and data transmission rates may change in the Layout as you set these Viewpoints.

From this Layout, you can obtain statistics such as the following to assist in the troubleshooting process:

• Message volume per endpoint address pair.

• Top bandwidth/data consumers

• Traffic density in terms of payload byte count per endpoint address pair

• Data transmission rates for each endpoint address pair

See Also

Top Talkers Top 20