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---
title: How to list oom killer score of running linux processus
description: a shell command that could be a one liner
date: 2021-10-05
tags:
- linux
- toolbox
---
## Introduction
There seems to be a missing piece for investigating what the oom killer will do when a linux kernel will run out of memory. Since oom_scores can be adjusted, looking at memory consumption is not enough to get a clear picture.
## The command
The base of the command came from a colleague, I refined it with the sort and tail :
```sh
while read -r pid comm; do
printf '%d\t%d\t%s\n' "$pid" "$(cat /proc/$pid/oom_score)" "$comm"
done < <(ps -e -o pid= -o comm=)|sort -n -k2|tail
```
On a busy server, the output will look like :
```
306 2 systemd-journal
673 2 haproxy
616 6 puppet
8370 7 mcollectived
1728 8 varnishncsa
14652 9 php-fpm7.2
14668 10 php-fpm7.2
14653 13 php-fpm7.2
1415 186 cache-main
29124 313 mysqld
```
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