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# OOMKilled: Why Your Container Died With Clean Metrics
- URL: https://debugly.dev/oomkilled-container-memory-limit-debugging/
- Published: 2026-04-09T10:10:00.000Z
- Updated: 2026-10-23T09:12:54.000Z
- Description: Exit code 137, a memory graph that looks perfectly healthy, and no application error. Here is why your monitoring missed it and how to find the real number.
- Author: Rohit Bhadani
- Tags: Kubernetes, DevOps, Error Autopsy, Docker

| Component                                 | In your heap metric | Counted by the cgroup |
| ----------------------------------------- | ------------------- | --------------------- |
| Managed heap                              | yes                 | yes                   |
| JVM metaspace and code cache              | no                  | yes                   |
| Thread stacks, 1MB each                   | no                  | yes                   |
| Direct and off heap buffers               | no                  | yes                   |
| Native library allocations                | no                  | yes                   |
| Memory mapped files                       | no                  | yes                   |
| Page cache from reading and writing files | no                  | yes                   |
| Kernel socket buffers                     | no                  | yes                   |

---

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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)