NodeJs caps memory usage on r6i.xlarge instance (32GB RAM) at 16GB

Question

Hello. We are running our NodeJs application which creates considerable memory pressure. We acquired a large server, however, NodeJs caps memory usage at 16GB regardless of settings (`--max-old-space-size=30000`). We tried different instances, with docker (AWS Linux) or without (Ubuntu 22), but the cap stays the same. It is a 64-bit version of Node (otherwise, it would have capped at ~4GB). We've tried Node versions 18.15, 18.19, 20.11. Interestingly, locally on a dev-machine (MacOS, 16GB RAM) it manages to occupy 18GB+ (although it takes nearly forever because of swapping) and doesn't crash.
The error we are observing on AWS server is
```
terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc
```
Any hint is appreciated that would point to a new direction in this investigation

Jagan · Answer

Inspect your Node.js application for memory leaks. Even if you increase the memory limit, a memory leak can eventually lead to crashes and use memory profiling tools to understand how your application is using memory and identify potential areas for optimization.

Jagan

respondido hace 2 años

NodeJs caps memory usage on r6i.xlarge instance (32GB RAM) at 16GB

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