As far as the SMS node, I don’t think that will cause memory/CPU issues, but it does use http to our API that in turn is using utility programs to get SMS data from the radio. Again, I don’t think that will cause problems, but what might is using any node code, Node-RED included, that does HTTPS. for some reason that seems to be a real resource hog. The original person who wrote the SMS node was using HTTPS to localhost for the API calls and that was causing resource issues when there was a lot of SMS going on.
For the PPP monitoring, are you making the API calls remotely or are you doing them locally on the Conduit?
Jeff