Hello all, Node red newbie here. I have two flows that are working and control an esp8266 spa controller(client) and an esp32 fishtank/grow area aquaponic(client). This used to have very low latency.... dashboard has a few switch nodes for troubleshooting l turning on and off of pumps etc. So w…

By default it should be sorting the processes in the table with the highest CPU at the top. When it starts slowing down see how much CPU is being used by what tasks. A Pi 4 has 4 cores I think the total CPU available is actually 200%. Not sure why. But in your application I wouldn't expect anythi…

So then I should be fine with the highest use around 2% and the rest .3 and a bunch of 0%?

Absolutely. You should not see anything slow down unless you are getting readings around 80. You said earlier that when it slows down it can take several seconds for an event to be actioned. Is it still true that in those several seconds gap that the readings are still negligible?

Hi Colin, Well it is like it is being blocked..... last time I tested it without the rbe node after the function comparatore in the flow it took like 45 seconds or more for any of the switch nodes to take effect.... also the last time it almost seemed to be random..... like the item would turn off…

[image] Troypearce: Well it is like it is being blocked. The question is, though, what happens to the processor usage in that time?

Hi Colin, I know I dont know what I am doing with node red, linux and the like, But I am a reasonable logical person and have done a whole lot of troubleshooting on many things over the years.... too many hobies. So my idea of logic says it is not mqtt being looped, and it is not the raspberry p…

so I should run those diagnostics you show above when the RBE node is removed to see what may be happening to the mqtt and to the Pi??? Troy

Hi Colin, Just did that and the numbers seem to show a little more cpu use but still under 2%. and the latency is again a problem.....

now it takes about 2 mins to get the action to happen

I think you are saying that during those two minutes the processor usage is still low. If so then add some debug nodes to the flow so you follow the button press (or whatever it is) through the flow and see where it is getting stuck. So for example add a debug on the output of the dashboard button…

Node-RED

Node-RED Forum

Node red flows seem to be slowing down

General

zenofmud 5 April 2020 18:52 43

Your flow can not be imported. Please read this thread and edit your post with a fixed import.

Topic		Replies	Views
Slow... (Everything) General	29	4999	29 July 2020
Advice needed on Pi CPU usage General	153	5131	13 April 2021
Client Disconnect but status still connected General mqtt	27	1110	3 May 2023
Node red unresponsive // one specific flow General	2	221	21 October 2022
My Node Red just died General	24	1664	20 October 2021

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Node red flows seem to be slowing down

Related topics