How does Bun handle memory allocation compared to Node.js

Memory Usage

Bun currently uses more memory than Node.js, which could be a concern for memory-constrained environments or when running many instances of an application. This higher memory usage might be a trade-off for Bun's performance improvements in other areas[2].

Monitoring memory consumption during CRUD operations showed:

- Node.js: 40 MB (average memory used)
- Bun: 70 MB (average memory used)[2]

Bun consumed nearly half the memory compared to Node.js in one test[4].

Default Heap Size

As a temporary solution to a memory leak in Node.js, I adjusted the heap size and increased it to 8GB. I'm curious about how Bun handles memory allocation in comparison. Is there a default heap size in Bun like in Node? If so, can it be modified through the CLI? I couldn't find specific details in the docs about this[1].

Comparison

Bun currently uses more memory than Node.js, which could be a concern for memory-constrained environments or when running many instances of an application[2]. Bun consumed nearly half the memory compared to Node.js in one test[4]. However, the exact memory allocation mechanisms and default heap sizes in Bun are unclear from the available information.