Testing MQTT with Telemetry with arbitrary function

Do you need to test your IoT platforms against arbitrary telemetry data from
a variety of sensors?

You can easily to generate ANY data you want from ANY sensor you want
using MIMIC IoT Simulator.

The below screenshot shows a NODE-RED subscriber client graphing a
simulated sensor publishing data of a Sine function with configurable
amplitude. In this case we just kept expanding the amplitude every minute.

The code to achieve that is shown and consist of a total of 10 lines including
comments and the effort in minutes.

With the same code, you could have multiple sensors sending the same
function, but different amplitudes at any point in time. Any other
parameters can be made unique for each simulated sensor.

The next screenshot shows 4 such sensors with different amplitudes
simultaneously. Any more would clutter the single graph too much.

Video: Monitor end-to-end response time of your IoT Application with 10k Sensors

This 5-minute Youtube video shows how to monitor response time to a
MQTT broker in an IoT Application with 10,000 active publishers.


This is not only important in the selection process, but also for ongoing
monitoring / troubleshooting, as outlined in our previous blog post
"IoT Sensors Need to be Managed", and this Gartner report.

We are following the testing methodology outlined in our previous post
"MQTT performance methodology using MIMIC MQTT Simulator" to
minimize the interference between the test equipment and the system
under test.

We are using the open-source Node-RED flows published in our Github
repository to measure and graph end-to-end latency between a publisher
and subscriber once a second for several brokers.

This simulates the latency between your sensors that are publishing
telemetry and your application that is consuming the telemetry.

We are using MIMIC MQTT Simulator to deploy 10,000 publisher clients
to the MessageSight broker on our intranet.