Hi Folks, I am learning Node-Red and already have implemented together with influxDB and Grafana for basic data acquisition purposes. I would like to also make a vehicle data logger, which require high resolution data and faster acquisition speeds (~300 sps) from CAN BUS and different acceleration …

There is nice thread where speed of Node-RED and many things around it have been discussed. You may find some answers from it. [image] Floating point calculation speed General So scrap Math.pow and just use conventional A * A, and when you say precalc radian to degree shou…

If you disconnect the influx node, is the cpu utilisation the same ?

Did some optimizations for your function. Left in comments to explain the changes. As I don't have any PI (or similar low performance machine) I really can't say will it help or how much it changes . For performance gain, node-red-contrib-unsafe-function (node) - Node-RED is faster than regular fu…

Also note that having two nodes connected to the output of a node causes Node-RED to clone the object. So removing the debug is likely to have quite an impact. If you really want to output a debug, might be better to use node.warn inside your function node. Though I think that the debug output pan…

@TotallyInformation - re debug - yes you are right... anything you can do to not fork and not send to the side panel will speed it up - so once you are sure it is sending what you want - disconnect / remove them. (Though turning it off will stop them being sent also so that will help.)

This is good to learn. Does this also apply when there's a "turned off" debug node in the flow?

As Dave says, turning it off will stop the debug msg being sent which helps but I think that there will still be a msg clone operation. Not 100% sure though.

Yes, if it's wired, it will clone.

Node-red is just fine at that level. I've done a few stress tests on my setup with a few hundred messages coming in from a 500k CAN bus, doing a few simple floating point math ops on them, and then sending an MQTT message. A Pi 3 was fine with this and a Pi4 doesn't breath hard, either. When I in…

[image] realsquash: I don't think there's a great way to store such high resolution data on something like a Pi unless you right it up with an SSD and a real database I suspect that it would be a lot better with just a decent SSD. The problem with the Pi is that, until you move to a Pi4, the …

I've recently connected an SSD (6Gbps) to a RPi-4B via one of its USB 3.0 ports. I used a powered enclosure for the SSD so it all looks neat and tidy and doesn't put a strain on the Pi's PSU. Also used the following suggestion so once the Pi has booted (off of the SD card) it uses the SSD. SD to …

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zenofmud 21 December 2019 11:30 29

@dceejay Dave, would disabling a debug node be as effective as removing it?

"Disable node" vs uninistalling it

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How fast is Node-Red?

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