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# MQTT Statistics graphs

The MQTT Statistics graphs provide you with statistics about messages published from and received by the MQTT broker during a scenario run.

In this topic:

## Publish/Received Message Rate graphs

Publish/Received Message Rate graphs display the number of messages published or received at any given time during the load test scenario run.

Axis | Description
--- | ---
X-axis | Elapsed time since the start of the run
Y-axis | Average number of messages per second published/received

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## Publish/Received Throughput graphs

Publish/Received Throughput graphs display the amount of data (in bytes) that Vusers received from or published to the MQTT broker at any given second of the load test scenario run.

Axis | Description
--- | ---
X-axis | Elapsed time since the start of the run
Y-axis | Throughput to or from the MQTT broker, in bytes

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## In-flight Messages graph

Displays the number of in-flight message on the MQTT broker at any given second of the load test scenario run. In-flight messages are QoS 1 or 2 messages that can be in the process of being transmitted, including messages currently going through handshakes and messages that are being retried.

Axis | Description
--- | ---
X-axis | Elapsed time since the start of the run
Y-axis | Number of inflight message received

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## Average Publish Duration graph

Displays the average amount of time (in seconds) that it took to publish a message on the MQTT broker at any given second of the load test scenario run.

Axis | Description
--- | ---
X-axis | Elapsed time since the start of the run
Y-axis | Average number of seconds it took to publish a message on the MQTT broker

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## Active Connection graph

Displays the number of active connections to the MQTT broker at any given moment of the load test scenario run.

Axis | Description
--- | ---
X-axis | Elapsed time since the start of the run
Y-axis | Number of active connections

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## Average Connect Duration graph

Displays the average amount of time (in seconds) that there was an active connection to the MQTT broker at any given second of the load test scenario run.

Axis | Description
--- | ---
X-axis | Elapsed time since the start of the run
Y-axis | The average number of seconds that there was an active connection to the MQTT broker

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## Connect Statistics graph

A pie graph that displays the number of successful versus failed connections to the MQTT broker during the load test scenario run.

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See also:

- MQTT Statistics monitoring

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