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From Benoît Canet <ben...@scylladb.com>
Subject Re: CS process killed by kernel OOM
Date Mon, 06 Feb 2017 13:17:33 GMT
Some people compact memory in cron jobs with: echo 1 > /proc/sys/vm/
compact_memory
to defragment the ram. Try this on a sacrified server first :)

On Thu, Jan 26, 2017 at 6:36 AM, Benjamin Roth <benjamin.roth@jaumo.com>
wrote:

> Hi there,
>
> We installed 2 new nodes these days. They run on ubuntu (Ubuntu 16.04.1
> LTS) with kernel 4.4.0-59-generic. On these nodes (and only on these) CS
> gets killed by the kernel due to OOM. It seems very strange to me because,
> CS only takes roughly 20GB (out of 128GB), most of RAM is allocated to page
> cache.
>
> Top looks typically like this:
> KiB Mem : 13191691+total,  1974964 free, 20278184 used, 10966376+buff/cache
> KiB Swap:        0 total,        0 free,        0 used. 11051503+avail Mem
>
> This is what kern.log says:
> https://gist.github.com/brstgt/0f1aa6afb558a56d1cadce958db46cf9
>
> Has anyone encountered sth like this before?
>
> --
> Benjamin Roth
> Prokurist
>
> Jaumo GmbH · www.jaumo.com
> Wehrstraße 46 · 73035 Göppingen · Germany
> Phone +49 7161 304880-6 <+49%207161%203048806> · Fax +49 7161 304880-1
> <+49%207161%203048801>
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>

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