7

I use CentOS 7 with kernel 3.1.0

I know there is a hitman in Linux called oom killer which kills a process that uses too much memory out of available space.

I want to configure it to log the activities so that I can check whether it happens or not. How can I set it up?

Thanks,

  • Last I checked the OOM killer was not shy about spamming the system logs with logs... – thrig Mar 28 '17 at 14:22
6

OOMkiller's activities are guaranteed to be in /var/log/dmesg (at least for a time). Usually the system logger daemon will also put it in /var/log/messages by default on most distributions with which I've worked.

These commands might be of help in tracking the logs down:

grep oom /var/log/*
grep total_vm /var/log/*

This answer has more details about parsing those log entries to see exactly what is going on.

  • Ran the above two commands and nothing appeared. But my java application was killed by OS. I am using centos server. – Al-Alamin Jun 25 '18 at 10:52
  • Yeah, CentOS doesn't seem to put it in /var/log/dmesg here either. And unfortunately I don't have access to /var/log/messages on this system to check that (owned/only accessible by root). – Izkata Jun 26 at 17:57

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.