I have a bit trouble again with my 8 shelly-plug-s.
All of them send the powerusage to the mqtt broker and I have set up a Gauge and a Chart for every device and one Gauge/Chart for all of them (sum).
After a couple hours my node-red is freezing and the dashboard page as well.
If I look into the docker log files I can find something like this:
(node:17) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 nodes-started listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit
Does this depends on too much messages of my mqtt broker to node-red because of my shelly's?
In the past I did a delay node between the mqtt input node and the chart/gauge node with dropping everything except 1 msg / 15 sec. That did the job this way, that node-red isn't freezing completly anymore but the Dashboard where I got all the gauge/charts is not that fast at all to display my measured values.
Can someone help me?
Thank you in advance.
PS: Node-RED is running the latests official docker-image on a raspberry pi 4b with 4 GB.