36 lines
907 B
Markdown
36 lines
907 B
Markdown
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---
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title: How to list oom killer score of running linux processus
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description: a shell command that could be a one liner
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date: 2021-10-05
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tags:
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- linux
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- toolbox
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---
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## Introduction
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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.
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## The command
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The base of the command came from a colleague, I refined it with the sort and tail :
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```sh
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while read -r pid comm; do
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printf '%d\t%d\t%s\n' "$pid" "$(cat /proc/$pid/oom_score)" "$comm"
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done < <(ps -e -o pid= -o comm=)|sort -n -k2|tail
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```
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On a busy server, the output will look like :
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```
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306 2 systemd-journal
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673 2 haproxy
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616 6 puppet
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8370 7 mcollectived
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1728 8 varnishncsa
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14652 9 php-fpm7.2
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14668 10 php-fpm7.2
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14653 13 php-fpm7.2
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1415 186 cache-main
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29124 313 mysqld
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```
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