Bluestore Runaway Memory

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Hello,

We have a Nautilus cluster exhibiting what looks like this bug: https://tracker.ceph.com/issues/39618

No matter what is set as the osd_memory_target (currently 2147483648 ), each OSD process will surpass this value and peak around ~4.0GB then eventually start using swap. Cluster stays stable for about a week and then starts running into OOM issues, kills off OSDs and requires a reboot of each node to get back to a stable state.

Has anyone run into similar/workarounds ?

Ceph version: 14.2.1, RGW Clients

CentOS Linux release 7.6.1810 (Core)

Kernel: 3.10.0-957.12.1.el7.x86_64

256GB RAM per OSD node, 60 OSD's in each node.


Thanks,

--
Brett Kelly

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