IBM Tivoli Composite Application Manager for Application Diagnostics, Version 7.1.0.1

Messaging Engine Communications attributes

The Messaging Engine Communications attributes display statistics for all the messaging engines being hosted by the current application server.

The attributes within this group are used to build the Messaging Engine Communications workspace.

For information about WebSphere PMI metrics, see WebSphere PMI Attribute Mapping.

API Connections

The number of sessions being used by messaging engines that are currently network connected to this application server. Format is positive integer.

Buffered Reads (bytes)

The number of bytes of data that have been received from the network and are held pending further processing. Large values might indicate that the application server is unable to process data fast enough to keep up with the other application server processes hosting messaging engines that it is network attached. Format is positive integer.

Buffered Writes (bytes)

The number of bytes of data being held pending transmission. Large values might indicate network congestion or application server processes hosting messaging engines which are unable to process data fast enough to keep up with the application server. Format is positive integer.

Errors

The communication errors that have occurred and resulted in a network connection to a messaging engine being disconnected. Format is positive integer.

Instrumentation Level

The instrumentation level for the Messaging Engine Communications. For WebSphere 6 or higher, the valid values are None, Basic, Extended, All, Custom. Blank if no instrumentation level is set.

Interval (sec)

The length (in seconds) of the sampling interval. Format is positive integer.

Message Read (bytes)

The number of bytes of message data received from application server processes hosting messaging engines over network connections. This does not include data used to negotiate the transmission of messages. Format is positive integer.

Message Written (bytes)

The number of bytes of message data sent to application server processes hosting messaging engines over network connections. This does not include data used to negotiate the transmission of messages. Format is positive integer.

Messaging Engine Attached

The number of distinct application server processes hosting messaging engines currently network connected to this application server. Format is positive integer.

Messaging Engine Name

The name of the message engine. The value format is an alphanumeric string, with a maximum of 256 characters.

Node Name

The name of the system on which the server is running. The value format is an alphanumeric string, with a maximum of 256 characters.

Origin Node

The name of the server subnode. Alphanumeric string. Maximum 128 characters.

Reads

The number of read operations used to receive data from application server processes hosting messaging engines via network connections. Format is positive integer.

Reads Blocked

The number of read operations that could not be completed immediately. This number can be used as an indicator of network congestion when communicating with application server processes hosting messaging engines. Format is positive integer.

Sample Date and Time

The date and time the Tivoli Enterprise Management Agent collected the data. The valid format is a 12-character timestamp. For the STR and SCAN functions, the format is MM/DD/YY HH:MM:SS; the following table shows the values contained in this character string:


Format of the 12-character timestamp

Character String Meaning
MM Month
DD Day
YY Year
HH Hour
MM Minute
SS Second

Example: 09/13/06 18:32:03 indicates the data was collected on September 13, 2006, at 18:32:03.

This attribute was designed for logging and reporting data-collection times rather than for creating situations. To specify a time and date for comparison and testing, use attributes from the Universal Time or Local Time groups.

Server Name

The name of the application server. Alphanumeric string.

Summary

Whether this row is a summary row of statistical totals for all messaging engine communications. Valid values are No and Yes.

Total Read (bytes)

The Number of bytes of data received from application server processes hosting messaging engines. Format is positive integer.

Total Written (bytes)

The Number of bytes of data sent to application server processes hosting messaging engines. Format is positive integer.

Writes

The number of write operations used to transmit data to application server processes hosting messaging engines via network connections. Format is positive integer.

Writes Blocked

The number of write operations that could not be completed immediately. This number can be used as an indicator of network congestion when communicating with application server processes hosting messaging engines. Format is positive integer.

Additional information:


Parent topic:

Attributes for ITCAM Agent for WebSphere Applications