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--- linux_wiki:oom_killer [2015/01/22 23:18]
billdozor created OOM killer page
+++ linux_wiki:oom_killer [2015/03/09 22:32]
billdozor
@@ Line 1: / Line 1: @@
 ====== OOM Killer ======
-Description: 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.
+**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**
+  * Distros: All, except for RHEL based kernel information at the end.
+----
 ===== OOM Function Details =====
@@ Line 27: / Line 34: @@
 Example:
 <code bash>
-to do...
+grep -i "out of memory" /var/log/kernel
+Jan 15 10:05:32 dbserver01 kernel: Out of memory: Kill process 39018 (mysqld) score 441 or sacrifice child
 </code>
 ----
-===== Tuning =====
+===== Memory Tuning =====
 Normally, when OOM is called, it is because an application has been poorly coded or configured to ask for a ridiculous amount of memory that it doesn't actually need. Then, when the application misbehaves and starts to crash/fork, it eats up a ton of memory very quickly...OOM steps in and starts killing things.