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List:       ceph-users
Subject:    [ceph-users] Re: 750GB SSD ceph-osd using 42GB RAM
From:       Stefan Kooman <stefan () bit ! nl>
Date:       2022-10-31 7:27:32
Message-ID: 4044f8ed-8526-bcfd-d3e8-8f22a98f920c () bit ! nl
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On 10/30/22 07:19, Nico Schottelius wrote:
> 
> Good morning ceph-users,
> 
> we currently have one OSD based on a SATA SSD (750GB raw) that consume
> around 42 GB of RAM. The cluster status is HEALTH_OK, no rebalancing or
> pg change.
> 
> I can go ahead and just kill it, but I was wondering if there is an easy
> way to figure out why it is consuming so much memory and help the
> OSD to recover it? It has been using a 40+ GB amount of memory for a few
> days now, without any known cluster changes.
> 
> This is based on ceph 16.2.10 + rook.

It might be this bug [1] with backport [2] (16.2.11). Is this the only 
OSD that has that high memory usage?

Gr. Stefan

[1]: https://tracker.ceph.com/issues/53729
[2]: https://tracker.ceph.com/issues/55631
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