Chapter 33. Monitoring Messaging Statistics

Because it can negatively impact performance, statistics collection for the messaging-activemq subsystem is not enabled by default. You do not need to enable queue statistics to obtain basic information, such as as number of messages on a queue or the number of messages added to a queue. Those statistics are available using queue attributes without requiring that you set statistics-enabled to true.

You can enable additional statistics collection using the management CLI or the management console.

Enable Messaging Statistics Using the Management CLI

The following management CLI command enables the collection of statistics for the default messaging server.

/subsystem=messaging-activemq/server=default:write-attribute(name=statistics-enabled,value=true)

Pooled connection factory statistics are enabled separately from the other messaging server statistics. Use the following command to enable statistics for a pooled connection factory.

/subsystem=messaging-activemq/server=default/pooled-connection-factory=activemq-ra:write-attribute(name=statistics-enabled,value=true)

Reload the server for the changes to take effect.

Enable Messaging Statistics Using the Management Console

Use the following steps to enable statistics collection for a messaging server using the management console.

Pooled connection factory statistics are enabled separately from the other messaging server statistics. Use the following steps to enable statistics collection for a pooled connection factory.

You can view runtime statistics for a messaging server using the management CLI or management console.

View Messaging Statistics Using the Management CLI

You can view messaging statistics using the following management CLI commands. Be sure to include the include-runtime=true argument as statistics are runtime information.

View Messaging Statistics Using the Management Console

To view messaging statistics from the management console, navigate to the Messaging (ActiveMQ) subsystem from the Runtime tab, and select the server. Select a destination to view its statistics.

See Messaging Statistics for a detailed list of all available statistics.

You can configure the following message counter attributes for a messaging server.

The management CLI command to configure these options uses the following syntax. Be sure to replace STATISTICS_NAME and STATISTICS_VALUE with the statistic name and value you want to configure.

/subsystem=messaging-activemq/server=default::write-attribute(name=STATISTICS_NAME,value=STATISTICS_VALUE)

For example, use the following commands to set the message-counter-max-day-history to five days and the message-counter-sample-period to two seconds.

/subsystem=messaging-activemq/server=default:write-attribute(name=message-counter-max-day-history,value=5)
/subsystem=messaging-activemq/server=default:write-attribute(name=message-counter-sample-period,value=2000)

You can view the message counter and message counter history for a queue using the following management CLI operations.

The management CLI command to use display these values uses the following syntax. Be sure to replace QUEUE_NAME and OPERATION_NAME with the queue name and operation you want to use.

/subsystem=messaging-activemq/server=default/jms-queue=QUEUE_NAME:OPERATION_NAME

For example, use the following command to view the message counter for the TestQueue queue in JSON format.

/subsystem=messaging-activemq/server=default/jms-queue=TestQueue:list-message-counter-as-json
{
    "outcome" => "success",
    "result" => "{\"destinationName\":\"TestQueue\",\"destinationSubscription\":null,\"destinationDurable\":true,\"count\":0,\"countDelta\":0,\"messageCount\":0,\"messageCountDelta\":0,\"lastAddTimestamp\":\"12/31/69 7:00:00 PM\",\"updateTimestamp\":\"2/20/18 2:24:05 PM\"}"
}

You can reset the message counter for a queue using the reset-message-counter management CLI operation.

/subsystem=messaging-activemq/server=default/jms-queue=TestQueue:reset-message-counter
{
    "outcome" => "success",
    "result" => undefined
}