Hi, I've got problem where the node-red service have almost 95-100% cpu usage and eventually restart it self. Here's what I've got from syslog:
node-red[5886]: (Use `node --trace-deprecation ...` to show where the warning was created)
node-red[5886]: 21 Aug 00:26:43 - [info]
node-red[5886]: Welcome to Node-RED
node-red[5886]: ===================
node-red[5886]: 21 Aug 00:26:43 - [info] Node-RED version: v2.0.5
node-red[5886]: 21 Aug 00:26:43 - [info] Node.js version: v16.6.2
node-red[5886]: 21 Aug 00:26:43 - [info] Linux 4.9.0-16-amd64 x64 LE
node-red[5886]: 21 Aug 00:26:43 - [info] Loading palette nodes
node-red[5886]: 21 Aug 00:26:44 - [info] Settings file : /root/.node-red/settings.js
node-red[5886]: 21 Aug 00:26:44 - [info] Context store : 'default' [module=memory]
node-red[5886]: 21 Aug 00:26:44 - [info] User directory : /root/.node-red
node-red[5886]: 21 Aug 00:26:44 - [warn] Projects disabled : editorTheme.projects.enabled=false
node-red[5886]: 21 Aug 00:26:44 - [info] Flows file : /root/.node-red/flows.json
node-red[5886]: 21 Aug 00:26:45 - [info] Server now running at http://127.0.0.1:1880/
node-red[5886]: 21 Aug 00:26:45 - [warn]
node-red[5886]: ---------------------------------------------------------------------
node-red[5886]: Your flow credentials file is encrypted using a system-generated key.
node-red[5886]: If the system-generated key is lost for any reason, your credentials
node-red[5886]: file will not be recoverable, you will have to delete it and re-enter
node-red[5886]: your credentials.
node-red[5886]: You should set your own key using the 'credentialSecret' option in
node-red[5886]: your settings file. Node-RED will then re-encrypt your credentials
node-red[5886]: file using your chosen key the next time you deploy a change.
node-red[5886]: ---------------------------------------------------------------------
node-red[5886]: 21 Aug 00:26:45 - [info] Starting flows
node-red[5886]: 21 Aug 00:26:45 - [info] Started flows
node-red[5886]: <--- Last few GCs --->
node-red[5886]: [5886:0x52a0cd0] 101132 ms: Mark-sweep (reduce) 254.6 (260.7) -> 253.8 (260.9) MB, 554.5 / 0.3 ms (average mu = 0.233, current mu = 0.175) allocation failure scavenge might not succeed
node-red[5886]: [5886:0x52a0cd0] 101808 ms: Mark-sweep (reduce) 255.3 (261.4) -> 254.1 (261.7) MB, 558.5 / 0.3 ms (average mu = 0.205, current mu = 0.174) allocation failure scavenge might not succeed
node-red[5886]: <--- JS stacktrace --->
node-red[5886]: FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
node-red[5886]: 1: 0xafedf0 node::Abort() [node-red]
node-red[5886]: 2: 0xa1814d node::FatalError(char const*, char const*) [node-red]
node-red[5886]: 3: 0xce792e v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [node-red]
node-red[5886]: 4: 0xce7ca7 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [node-red]
node-red[5886]: 5: 0xeb1685 [node-red]
node-red[5886]: 6: 0xec081d v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [node-red]
node-red[5886]: 7: 0xec399c v8::internal::Heap::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [node-red]
node-red[5886]: 8: 0xe862bc v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationType, v8::internal::AllocationOrigin) [node-red]
node-red[5886]: 9: 0x11f3126 v8::internal::Runtime_AllocateInYoungGeneration(int, unsigned long*, v8::internal::Isolate*) [node-red]
node-red[5886]: 10: 0x15c9eb9 [node-red]
systemd[1]: node-red.service: Main process exited, code=killed, status=6/ABRT
systemd[1]: node-red.service: Unit entered failed state.
systemd[1]: node-red.service: Failed with result 'signal'.
systemd[1]: node-red.service: Service hold-off time over, scheduling restart.
systemd[1]: Stopped Node-RED.
systemd[1]: Started Node-RED.
node-red[5920]: (node:5920) [DEP0128] DeprecationWarning: Invalid 'main' field in '/usr/lib/node_modules/node-red/node_modules/@node-red/editor-client/package.json' of './lib/index.js'. Please either fix that or report it to the module author
node-red[5920]: (Use `node --trace-deprecation ...` to show where the warning was created)
node-red[5920]: 21 Aug 00:28:25 - [info]
node-red[5920]: Welcome to Node-RED
It's running on 1GB VPS with explicit --max_old_space_size=256
option. The system memory is fine (I think), it got ~600MB free left. I've influxdb, blynk & email node installed. I thought maybe there is some problem with one of the node, but when I disabling all flows the problem is still there, keep restarting every 1-2 min. From the process-monitor I've got this behavior, first the CPU goes up to almost 100%, then the memory climbing up from 0 to around 256MB then restarted.
Any suggestion where do I needed to take a look?