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# EMFILE: Too Many Open Files, and Why Raising ulimit Is Wrong
- URL: https://debugly.dev/too-many-open-files-ulimit-debugging/
- Published: 2026-08-17T08:40:00.000Z
- Updated: 2026-10-17T05:49:10.000Z
- Description: The quick fix is raising ulimit. The real question is what is holding thousands of descriptors open and never closing them.
- Author: Rohit Bhadani
- Tags: Node.js, Error Autopsy, DevOps, Debugging

| Ceiling     | Scope                              | Where it lives         |
| ----------- | ---------------------------------- | ---------------------- |
| Soft limit  | Per process, adjustable at runtime | ulimit -n, LimitNOFILE |
| Hard limit  | Per process, only root raises it   | ulimit -Hn             |
| fs.file-max | Whole system                       | sysctl fs.file-max     |

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Published on [debugly.dev](https://debugly.dev/) by [Rohit Bhadani](https://debugly.dev/about/) | Founder of [Krova Cloud](https://krova.cloud/?ref=debugly.dev)