Hi there, I am using Serial input node with NodeRED on my Laptop to receive data coming at a baud rate of 9600 from a NodeMCU. I am receiving around 100 data per second from the NodeMCU. Since the graph node on NodeRED is not capable of handling data at such high speed, I have used a delay node (To allow only 10 data per second) to allow the graph plot smoothly.
This thing goes smooth for some time. After that, The data coming stops and plotting stops. If i restart the NodeRED, it starts working.
There is no issue in data from the NodeMCU as i have checked this with Python script and there is no issue in data coming from the NodeMCU.
After roughly how many seconds does the problem show up? That is, how many data points does the graph show? How many pixels wide is your browser window?
What is the memory and CPU usage of the browser?
If you inject payload into the chart directly (ie, without sending a full new array), the dashboard will append the values to each array, eventually you will run out of memory and/or the browser won't enjoy it any longer.
If you push a full new array to the chart node, it will flush previous values.
example with a function node sending 1000 random elements every second;