MQTT-MQ data path load testing

Question

We are implementing a communication system where client (mobile device) sends messages thru MQTT-MQ to the backend systems. I would like to benchmark the load performance of the MQTT-MQ data path.

Could you please recommend if there is any opensource (or commercial) performance test tool which could load test the MQTT-MQ data path.

Answer 1

Try out Apache JMeter , it provides the following test elements:

• JMS Publisher
• JMS Subscriber
• JMS Point-to-Point

which should be quite enough to conduct your testing.

Just download appropriate MQ Java client libraries, drop them to JMeter's /lib folder, restart JMeter and you should be able to use the relevant classes to send messages to queues and read them.

See the following reference guides:

• Building a JMS Topic Test Plan
• Building a JMS Point-to-Point Test Plan
• Building a JMS Testing Plan - Apache JMeter

Answer 2

Both mqtt-spy and mqtt-spy-daemon support concurrent messaging. You can define a script that sends messages concurrently, or multiple scripts which is normally easier. To have multiple concurrent MQTT clients connected to the broker/server, you can run multiple mqtt-spy connections or multiple mqtt-spy-daemon instances, each having their own configuration and scripts.