How much RAM do you have, and how many OSDs? This config should be considered close to the minimum: ceph config set osd osd_memory_target 1500000000 (1.5GB per OSD -- remember the default is 4GB per OSD) -- dan On Fri, Nov 6, 2020 at 11:52 AM Ml Ml <mliebherr99@googlemail.com> wrote:

Hello List,

i think 3 of 6 Nodes have to less memory. This triggers the effect, that the nodes will swap a lot and almost kill themselfes. That triggers OSDs to go down, which triggers a rebalance which does not really help :D

I already ordered more ram. Can i turn temporary down the RAM usage of the OSDs to not get into that vicious cycle and just suffer small but stable performance?

This is ceph version 15.2.5 with bluestore.

Thanks, Michael _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io