Hi, I´m using Node-Red on 4 devices :face_with_hand_over_mouth: On one RPi I can see Node-Red restarts every few weeks, I saw this line: Sep 23 09:01:59 openwb kernel: Node 0 active_anon:54128kB inactive_anon:875100kB active_file:1932kB inactive_file:1780kB unevictable:16kB isolated(anon):0kB isolated(file):0kB mapped:2924kB dirty:0kB writeback:0kB shmem:632kB writeback_tmp:0kB kernel_stack:1144kB pagetables:4616kB sec_pagetables:0kB all_unreclaimable? no Sep 23 09:02:21 openwb systemd[1]: Stopped Node-RED graphical event wiring tool. Sep 23 09:02:21 openwb systemd[1]: Started Node-RED graphical event wiring tool. Sep 23 09:02:27 openwb Node-RED[6628]: 23 Sep 09:02:27 - [info] Sep 23 09:02:27 openwb Node-RED[6628]: Willkommen bei Node-RED Sep 23 09:02:27 openwb Node-RED[6628]: =================== Sep 23 09:02:27 openwb Node-RED[6628]: 23 Sep 09:02:27 - [info] Node-RED Version: v4.0.2 Sep 23 09:02:27 openwb Node-RED[6628]: 23 Sep 09:02:27 - [info] Node.js Version: v18.20.4 Sep 23 09:02:27 openwb Node-RED[6628]: 23 Sep 09:02:27 - [info] Linux 6.1.21-v7+ arm LE What could this be? a problem with the RAM? greetings

the untervoltage has nothing to do with my problem. so my search goes on. Today I discovered something very strange that I cannot explain: I query one Eastron SDM630 with USB RS485: [grafik] I copied my flow from another RPi3, where I query 3x SDM72 & 1x SDM630. the SDM630 with 38,4kBaud takes 0,6s. On this flow it takes 1,7s so I changed to 9,6kBaud, now one query takes 1,5s => any explanation for this? Could the problem be with the RS485 adapter which has problems with 38.4kBaud? I use different adapters, on my other RPi3 with 0,6s I use a more expensive one. 2nd question: I´ve a very simple join node, with 2 msg incoming. the first msg comes every 2s the second msg comes only if I change a slider (in my dashboard) => could this rise memory ? I played on both and after that I saw memory drops 13% :dizzy_face:

I don´t understand NR behavior. the other ("customer") node-red RPi3 runs over 20 days with constant 29% ram, after 20 days ram rose >40%. I didn´t change anything, just look "top". my RPi3 now rose over 40% too and what I also don't understand are these cpu peaks: [grafik] every 3 min. I´ve no cron-plus with 3min. in the first days / after restart the peaks are very low, barely visible and with the length of the uptime they increase. :face_with_monocle: after reboot: [grafik] [image] Colin: Next time you restart could you show us the full node red startup log please. [grafik] After reboot in system journal: [grafik] the cron-plus says: System Time Change Detected - refreshing schedules! If the system time was not changed then this typically occurs due to blocking code elsewhere in your application what does that mean? could this be reason for cpu peaks or rising memory? last idea: delete all cron-plus nodes and replace with inject (much work for me)

[image] Becker: System Time Change Detected - refreshing schedules! If the system time was not changed then this typically occurs due to blocking code elsewhere in your application what does that mean? could this be reason for cpu peaks Reason - no. Clue - yes. As it says, something is blocking/hogging the Node Event loop (i.e. high CPU usage) to the extent that nodejs didnt have a chance to see the system clock change for 5 seconds. That is highly indicative of a heavy synchronous process in your flows/nodes [image] Becker: last idea: delete all cron-plus nodes and replace with inject (much work for me) Sure, you can remove the thing informing you that there is a problem - but it wont fix your problem. The graph is backing up what cron-plus is telling you - that the NodeJS event loop is being blocked by a synchronous process. As for what is hogging the CPU, only you can determine by looking at the flows you have written. Hints: Are you looping large data arrays? Are you processing large things like images or audio or files? Are you doing synchronous file reads or writes? It could even be the garbage collection kicking in It could be a badly written node. for example, the average or counter node I mentioned before - i.e. holding on to crap loads of memory for no reason.

I repeat :woozy_face: no audio, no images, no syn. file reads or writes, no larage arrays. Now I deleted the average node (from simulator RPi2), and I have to wait for several days. the average node gets every 5s: [grafik] the counter node gets some crap from cronplus node: [grafik]

I came across a hot lead: I replaced all cronplus nodes by injects: [grafik] never saw such a low mem% and cpu load goes to 0 - 0,01 I think I have to talk to Maintainer steve-mcl :melting_face:

Could you restore the original flow and export all the cron nodes, then go back to the new flow and export all the equivalent Inject nodes please, so we can see what the difference is.

[image] Becker: I came across a hot lead: I replaced all cronplus nodes by injects: [grafik] never saw such a low mem% and cpu load goes to 0 - 0,01 You are simply masking the real issue. Yes, Cron-plus has additional data in its msg (for advanced usage) - its what is holding on to extra data that is your issue. What you have done could easily been done with an inline function node to clean up the msg! Also, did you re-enable all the stuff you disabled/deleted before coming to your final conclusion?

two of several cronplus nodes for example: [{"id":"f575aa0996438761","type":"cronplus","z":"5f6e5e5e2b5d2c03","name":"Daten","outputField":"payload","timeZone":"","storeName":"","commandResponseMsgOutput":"output1","defaultLocation":"","defaultLocationType":"default","outputs":1,"options":[{"name":"Modus","topic":"Modus","payloadType":"global","payload":"openwbModus","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Überschuss","topic":"U","payloadType":"global","payload":"Übers-ohne-LP","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Offset","topic":"offset","payloadType":"global","payload":"offset","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Sofort","topic":"sofort","payloadType":"flow","payload":"sofort","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"min I","topic":"minI","payloadType":"flow","payload":"minI","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"frc","topic":"frc","payloadType":"flow","payload":"frc","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"go-e","topic":"goe","payloadType":"global","payload":"LP2-Leistung","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Tibber","topic":"Tibber","payloadType":"flow","payload":"Tibber","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"I max","topic":"Imax","payloadType":"global","payload":"Imax","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Phasen","topic":"phasig","payloadType":"flow","payload":"Phasen","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"}],"x":90,"y":1360,"wires":[["2bcf40094ea7e9ed"]]},{"id":"45417146841658f2","type":"cronplus","z":"5f6e5e5e2b5d2c03","name":"PV-laden","outputField":"payload","timeZone":"","storeName":"","commandResponseMsgOutput":"output1","defaultLocation":"","defaultLocationType":"default","outputs":1,"options":[{"name":"Überschuss","topic":"U","payloadType":"global","payload":"Übers-ohne-LP⌀","expressionType":"cron","expression":"*/10 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"PV-laden","topic":"PV","payloadType":"global","payload":"openwbModus","expressionType":"cron","expression":"*/10 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"SoC Freigabe","topic":"socfreigabe","payloadType":"global","payload":"socfreigabe","expressionType":"cron","expression":"*/10 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Start PV","topic":"start","payloadType":"global","payload":"startpv","expressionType":"cron","expression":"*/10 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"}],"x":100,"y":1140,"wires":[["d63e39946820db0a"]]}] (you can see all if you would import my flow #19) replaced on my RPi2 simulator by for example only one: [{"id":"23f8c7079d1db506","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"Modus","payload":"goeModus","payloadType":"global","x":130,"y":860,"wires":[["1a3302883aa58f9f"]]},{"id":"73f0b8ed0105ee74","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"U","payload":"Übers-ohne-LP","payloadType":"global","x":150,"y":900,"wires":[["1a3302883aa58f9f"]]},{"id":"4b6e611ea9c0e3ff","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"offset","payload":"offset","payloadType":"global","x":120,"y":940,"wires":[["1a3302883aa58f9f"]]},{"id":"efdb2f8d99abbf97","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"sofort","payload":"sofort","payloadType":"flow","x":110,"y":980,"wires":[["1a3302883aa58f9f"]]},{"id":"cd5d0229634d636b","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"minI","payload":"minI","payloadType":"flow","x":100,"y":1020,"wires":[["1a3302883aa58f9f"]]},{"id":"579ca51ceec4eb8e","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"openwb","payload":"LP1-Leistung","payloadType":"global","x":140,"y":1060,"wires":[["1a3302883aa58f9f"]]},{"id":"7f7c6bb8ad586aeb","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"Tibber","payload":"Tibber","payloadType":"flow","x":110,"y":1100,"wires":[["1a3302883aa58f9f"]]},{"id":"8c9a7ebdb43eae65","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"Imax","payload":"Imax","payloadType":"global","x":110,"y":1140,"wires":[["1a3302883aa58f9f"]]},{"id":"80f73b02af4e7186","type":"inject","z":"c09741270c88473d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"phasig","payload":"Phasen","payloadType":"flow","x":120,"y":1180,"wires":[["1a3302883aa58f9f"]]},{"id":"1a3302883aa58f9f","type":"join","z":"c09741270c88473d","name":"Objekt","mode":"custom","build":"object","property":"payload","propertyType":"msg","key":"topic","joiner":"\\n","joinerType":"str","accumulate":false,"timeout":"","count":"9","reduceRight":false,"reduceExp":"","reduceInit":"","reduceInitType":"","reduceFixup":"","x":520,"y":1000,"wires":[["a8e803f8e13c7275","0cabbb1ba85a5b9b"]]}] [image] Steve-Mcl: Yes, Cron-plus has additional data in its msg (for advanced usage) - its what is holding on to extra data that is your issue. What you have done could easily been done with an inline function node to clean up the msg! you mean delete: [{"id":"d63e39946820db0a","type":"change","z":"5f6e5e5e2b5d2c03","name":"lösche","rules":[{"t":"delete","p":"cronplus","pt":"msg"},{"t":"delete","p":"scheduledEvent","pt":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":90,"y":1200,"wires":[["86ef66a806be684d"]]}] yes I added the delete node after every cronplus to be on the safe side! the RPi3 runs now with cronplus + delete, I´ll see in a few days/weeks if mem is rising again. since yesterday it is at 26% - much more than the RPi2. the cpu peaks every 3min are still there at the RPi3. I will let the RPi2 (simulator) run as well a few weeks (with the inject nodes instead of cronplus) - the graphical interface looks really bad without cronplus :frowning: than I will decide, if I delete all cronplus on RPi3 (productiv system)

Interseting. I didnt consider it might be due to excessive context usage in the schedules. There might be something in it. You can of course modify your flows to remove the context inside cron nodes to see if it helps (and it should remove the need to re-write all your flows: instead, just update the cron entries to send a string & add a link call after the cron node) [image] [{"id":"f575aa0996438761","type":"cronplus","z":"07f7c6534787ceb5","name":"Daten","outputField":"payload","timeZone":"","storeName":"","commandResponseMsgOutput":"output1","defaultLocation":"","defaultLocationType":"default","outputs":1,"options":[{"name":"Modus","topic":"Modus","payloadType":"str","payload":"global.openwbModus","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Überschuss","topic":"U","payloadType":"str","payload":"global.Übers-ohne-LP","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Offset","topic":"offset","payloadType":"str","payload":"flow.offset","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Sofort","topic":"sofort","payloadType":"str","payload":"flow.sofort","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"min I","topic":"minI","payloadType":"str","payload":"minI.minI","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"frc","topic":"frc","payloadType":"str","payload":"flow.frc","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"go-e","topic":"goe","payloadType":"str","payload":"global.LP2-Leistung","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Tibber","topic":"Tibber","payloadType":"str","payload":"flow.Tibber","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"I max","topic":"Imax","payloadType":"str","payload":"global.Imax","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Phasen","topic":"phasig","payloadType":"str","payload":"flow.Phasen","expressionType":"cron","expression":"*/5 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"}],"x":190,"y":800,"wires":[["d71a74992a2221a7"]]},{"id":"45417146841658f2","type":"cronplus","z":"07f7c6534787ceb5","name":"PV-laden","outputField":"payload","timeZone":"","storeName":"","commandResponseMsgOutput":"output1","defaultLocation":"","defaultLocationType":"default","outputs":1,"options":[{"name":"Überschuss","topic":"U","payloadType":"str","payload":"global.Übers-ohne-LP⌀","expressionType":"cron","expression":"*/10 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"PV-laden","topic":"PV","payloadType":"str","payload":"global.openwbModus","expressionType":"cron","expression":"*/10 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"SoC Freigabe","topic":"socfreigabe","payloadType":"str","payload":"global.socfreigabe","expressionType":"cron","expression":"*/10 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"},{"name":"Start PV","topic":"start","payloadType":"str","payload":"global.startpv","expressionType":"cron","expression":"*/10 * * * * *","location":"","offset":"0","solarType":"all","solarEvents":"sunrise,sunset"}],"x":180,"y":720,"wires":[["0f19b84352baf3d4"]]},{"id":"0f19b84352baf3d4","type":"link call","z":"07f7c6534787ceb5","name":"","links":["038f99a129522068"],"linkType":"static","timeout":"30","x":350,"y":720,"wires":[["4d722c16038484a9"]]},{"id":"4d722c16038484a9","type":"debug","z":"07f7c6534787ceb5","name":"debug 1","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":560,"y":720,"wires":[]},{"id":"d71a74992a2221a7","type":"link call","z":"07f7c6534787ceb5","name":"","links":["038f99a129522068"],"linkType":"static","timeout":"30","x":370,"y":800,"wires":[["30d93c12515df1e3"]]},{"id":"30d93c12515df1e3","type":"debug","z":"07f7c6534787ceb5","name":"debug 2","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":560,"y":800,"wires":[]},{"id":"2eb12067f62c3576","type":"group","z":"07f7c6534787ceb5","name":"Load context when payload is flow.xxx or global.xxx","style":{"label":true},"nodes":["6fc4e3b8eb2dcd58","038f99a129522068","36beb2ac4471eba6","d63e39946820db0a"],"x":164,"y":879,"w":462,"h":82},{"id":"6fc4e3b8eb2dcd58","type":"function","z":"07f7c6534787ceb5","g":"2eb12067f62c3576","name":"get context data","func":"\nif (typeof msg.payload === \"string\" && msg.payload.startsWith('flow.') && msg.payload.startsWith('global.')) {\n const [store, key] = msg.payload.split('.')\n if(store === 'flow') {\n msg.payload = flow.get(key)\n } else {\n msg.payload = global.get(key)\n }\n}\nreturn msg;","outputs":1,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":320,"y":920,"wires":[["36beb2ac4471eba6"]]},{"id":"038f99a129522068","type":"link in","z":"07f7c6534787ceb5","g":"2eb12067f62c3576","name":"load context","links":[],"x":205,"y":920,"wires":[["6fc4e3b8eb2dcd58"]]},{"id":"36beb2ac4471eba6","type":"link out","z":"07f7c6534787ceb5","g":"2eb12067f62c3576","name":"link out 1","mode":"link","links":[],"x":585,"y":920,"wires":[]},{"id":"d63e39946820db0a","type":"change","z":"07f7c6534787ceb5","g":"2eb12067f62c3576","name":"lösche","rules":[{"t":"delete","p":"cronplus","pt":"msg"},{"t":"delete","p":"scheduledEvent","pt":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":490,"y":920,"wires":[[]]}] I am interested to see if that improves matters. Would you be willing to give this a go on one of your systems?

I don't understand your process, I think it´s complicated and I don't like that! I´ve rebuild my flow with injects and I´ll wait a few weeks, if the memory problem is gone or not. what I don’t quite understand is my other node-red main instance on a virtual machine (x64, much more power than a RPi, with 4gb ram), it has several cronplus nodes too, here I can´t see memory rising over time. does it have to do with the processor/architecture x64 arm?

[image] Becker: I think it´s complicated I'm guessing you haven't learned about the link-call. Its akin to a subroutine and will help I'm many situations to reduce code duplication. It's actually a simplification in most cases. If you're not interested in learning, that's ok too

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Node-Red on RPi restarts after ~2 weeks

General

Steve-Mcl 19 November 2024 16:44 45

Might be of interest: Node-red + MCP23017 (x5) slowing down - #27 by TadyTheFish

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Memory leakage of Node-Red on RasPI General	8	5858	28 March 2019
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Node-Red on RPi restarts after ~2 weeks

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