Allocation failed - JavaScript heap out of memory

General
1

Hello Folks. I have to debug what is going on with my NR. Deployed in container, docker node-red.
I was trying many things in parallel, so I don't know what is triggering crash of NR.
How can I debug it deeper, which flow or node or function etc? In logs of docker I can find like below:

<--- Last few GCs --->
) [17:0x5557223fc880]   230223 ms: Mark-sweep 1400.7 (1452.5) -> 1401.0 (1440.0) MB, 10823.7 / 0.0 ms  (+ 0.4 ms in 132 steps since start of marking, biggest step 0.0 ms, walltime since start of marking 10987 ms) (average mu = 0.475, current mu = 0.016) all[17:0x5557223fc880]   239934 ms: Mark-sweep 1404.9 (1440.5) -> 1404.8 (1440.5) MB, 9541.7 / 0.0 ms  (+ 156.1 ms in 38 steps since start of marking, biggest step 63.6 ms, walltime since start of marking 9706 ms) (average mu = 0.283, current mu = 0.007) all

<--- JS stacktrace --->
Cannot get stack trace in GC.
FATAL ERROR: MarkCompactCollector: semi-space copy, fallback in old gen Allocation failed - JavaScript heap out of memory
2

Based on that snippet, all we can say is that it is out of memory.. Maybe trying to process too much ? Or too large an object/image ? Or too fast ? Not freeing up memory fast enough ? Too many instances running for the machine ?

3

You're right. But the question behind this is how to investigate what is causing the OOM. How I should debug?

4

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