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linux_wiki:oom_killer [2015/01/23 08:30] billdozor |
linux_wiki:oom_killer [2016/03/18 23:10] billdozor [OOM Killer] |
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====== OOM Killer ====== | ====== OOM Killer ====== | ||
- | Description: | + | **General Information** |
+ | |||
+ | The Linux OOM (Out Of Memory) Killer is a kernel function that will automatically kill off processes if there is memory contention on a system. | ||
+ | |||
+ | **Checklist** | ||
+ | * Distro(s): Any (except for EL based kernel information at the end) | ||
+ | |||
+ | ---- | ||
===== OOM Function Details ===== | ===== OOM Function Details ===== | ||
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The setting is from 0 to 100. | The setting is from 0 to 100. | ||
- | * 0 = Avoid swapping for as long as possible | + | * 0 = Very aggressively avoid swapping for as long as possible |
+ | * High risk of OOM killing from memory and I/O pressure | ||
+ | * 10 = Red Hat recommended for Oracle databases | ||
* **60 = Linux default** | * **60 = Linux default** | ||
* 100 = Aggressively swap from memory to disk | * 100 = Aggressively swap from memory to disk |