Visualizing process power consumptions on Grafana

Introduction

This tutorial presents how to visualize the power estimation computed by a formula on a grafana dashboard to obtain this kind of visualisation:

This screenshot show the visualisation of power consumption of a web browser and tools used for monitoring (database, sensor, formula)

In this tutorial, we describe how to connect a formula to a grafana instance, using InfluxDB. Then, we will see how to configure grafana to visualize the power estimation computed by the formula.

This tutorial assume that you know how launch a formula and a sensor to compute power estimation and that you have an InfluxDB and a grafana instance running on your local machine. The InfluxDB instance listen on port 1234 and Grafana instance listen on port 4321.

Connect Grafana to the InfluxDB instance

Connect to your Grafana instance and go to the "Data sources" section (in the configuration part of the side bar).

Click on the "Add data source" button and select "InfluxDB".

Enter a data source name (here we choose "InfluxDB-1"), the instance URI (http://localhost:4321) and the database name you use in the file config_formula.json then click on the "Save and test" button.

Visualize the power consumption on a dashboard in real-time

Go to the "Create Dashboard" section on the side bar to create a new dashboard.

Click on the "add Query" button and write the following query on the Query field to request the power estimations from the InfluxDB measurement: SELECT power FROM "power_consumption" GROUP BY target

Then write $tag_target on the ALIAS BY field to label each graph with the target name

To display the power consumption in real time, you can update the range of the visualisation to last 5 minutes and the refresh dashboard parameter to 5s. This parameter are on the top-right corner of the UI.