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chore: fix heap profiling node flags #2033

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epipav merged 1 commit into from
Jul 24, 2026
+7 −3
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chore: fix heap profiling node flags #2033

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10 changes: 7 additions & 3 deletions frontend/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -91,7 +91,11 @@ EXPOSE 3000

ENV NODE_OPTIONS=--max-old-space-size=3072

# Heap snapshots are opt-in: set HEAP_SNAPSHOT_ENABLED=1 to activate.
# When enabled, cd into the heapdumps volume mount so snapshots land there.
# Heap profiling is opt-in: set HEAP_SNAPSHOT_ENABLED=1 to activate.
# When enabled, cd into the heapdumps volume mount so snapshots land there,
# take snapshots on demand via SIGUSR2, and log GC activity (--trace-gc is
# not permitted in NODE_OPTIONS, so it must live here). No
# --heapsnapshot-near-heap-limit: serializing a full heap at the limit
# needs more memory than is left, so it only hastens the OOM kill.
# exec replaces sh with node for proper signal handling.
CMD ["/bin/sh", "-c", "if [ \"$HEAP_SNAPSHOT_ENABLED\" = \"1\" ] || [ \"$HEAP_SNAPSHOT_ENABLED\" = \"true\" ]; then cd /app/heapdumps && exec node --heapsnapshot-near-heap-limit=3 --heapsnapshot-signal=SIGUSR2 /app/.output/server/index.mjs; else exec node /app/.output/server/index.mjs; fi"]
CMD ["/bin/sh", "-c", "if [ \"$HEAP_SNAPSHOT_ENABLED\" = \"1\" ] || [ \"$HEAP_SNAPSHOT_ENABLED\" = \"true\" ]; then cd /app/heapdumps && exec node --trace-gc --heapsnapshot-signal=SIGUSR2 /app/.output/server/index.mjs; else exec node /app/.output/server/index.mjs; fi"]
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