Matrix board performance measurements¶
| authors: | Joost Baars |
|---|---|
| date: | June 2020 |
Description¶
The matrix board performance measurements execute performance measurements on the matrix board demonstrator (see: Matrix Board Communication).
In these measurements, different Quality of Service (QoS) policies are compared with each other. The Matrixboard demonstrator mainly shows the time it takes for a new device to connect or disconnect using DDS.
The selected QoS policies are the durability, liveliness, lifespan, reliability and the deadline QoS policies (see Quick performance tests).
A short description of how the connect and disconnect durations are measured can be seen below (see chapter Connect duration & Disconnect duration)
An application has been designed for measuring the connect and disconnect duration automatically. This application and the results of the measurements are explained on the pages beneath. The system configuration shows how to configure the dependencies of the performance measurements. The performance application page describes the application in detail: how the application can be executed as well as how the application works from a technical point of view. The performance measurement results show the results of the performance measurements of the selected QoS policies.
Connect duration¶
The connect duration is measured between registering to a topic and being notified
that a device is connected to the topic. This principle is displayed below for
Application1. In this figure, the process that determines the duration between
registering and other devices being notified is displayed. The duration between
the start of the “registers to topic” arrow and the end of the “notified” arrow is
the connect duration.
Disconnect duration¶
The disconnect duration is measured between disconnecting from a topic and being
notified that a device has disconnected from the topic. This principle is displayed
below for Application1. In this figure, the process that determines the duration
between disconnecting and other devices being notified is displayed. The duration
between the start of the “Disconnects from topic” arrow and the end of the “notified”
arrow is the disconnect duration.
Helper pages¶
The following pages are written for explaining some topics. This information does not contain information needed for the performance measurements, but contains information that could be useful for debugging or learning more about the tools.