node process killed by os during heap snapshot due to OOM

Version

v20.9.0

Platform

linux 6.2.7-060207-generic

Subsystem

No response

What steps will reproduce the bug?

const memoryHog = [];

setInterval(async () => {
  const mem = process.memoryUsage();
  console.log(mem);
  memoryHog.push(new Array(20000000).fill({ foo: Date.now() }));
}, 5000);

node --heapsnapshot-near-heap-limit=800 --max-old-space-size=1000 script.js

How often does it reproduce? Is there a required condition?

It always happens

What is the expected behavior? Why is that the expected behavior?

I expected node to generate a heap snapshot when the memory usage approached the specified limit, allowing analysis of memory allocation before the process was terminated duo to heap OOM

What do you see instead?

Node uses all of the host system resources, and the Node process is killed by the operating system before a heap snapshot can be generated, preventing analysis of the memory usage pattern that leads to the crash.

Additional information

I have 16GB of ram and it should be enough to generate a heap snapshot of a node process with 1GB use of heap

node --heapsnapshot-near-heap-limit=800 --max-old-space-size=1000 を使用して script.js で問題を再現し、プロセスが終了させられる前のメモリ使用量を確認します。まず Node.js における heap-snapshot-near-heap-limit の動作を追跡します。プロセスがオペレーティングシステムによって終了させられる前に、期待されるヒープスナップショットを生成できれば完了です。