Node.js · Senior · Question 2 of 75

A container has 2 GB of memory, but the Node.js process crashes with 'JavaScript heap out of memory' at about 1.4 GB. What should you check?

1The ulimit -n value
2The UV_THREADPOOL_SIZE value
✓Correct answer: The V8 old-space limit: set --max-old-space-size to fit the container, leaving room for Buffers and native memory

Explanation

Recent Node.js versions size the heap from the container's memory limit, but the heap is not all memory: Buffers, native code and thread stacks live outside it. Leave a margin.

A container has 2 GB of memory, but the Node.js process crashes with 'JavaScript heap out of memory' at about 1.4 GB. What should you check?

Explanation

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