Hello list, we have found that the active mgr process in our 3-node CEPH cluster takes a lot of memory. After start the memory usage is constantly increasing. After 6 days the process takes ~67GB: ~# ps -p 7371 -o rss,%mem,cmd RSS %MEM CMD 71053880 26.9 /usr/bin/ceph-mgr -n mgr.hostname.nvwzhc -f --setuser ceph --setgroup ceph --default-log-to-file=false --default-log-to-journald=true --default-log-to-stderr=false Cluster Specs: - 3-node 3-way mirror - each node has 256GB memory - each node has 10x 7.68TB NVMe, each NVMe is split into 2 OSDs - monitoring node is a separate VM (separate Hypervisor) - iSCSI and NFS Gateway are located on 2 separate VMs (separate Hypervisor) - main purpose is CephFS with currently ~15.42 million objects Is this normal behaviour or might we have a misconfiguration somewhere? What can we do to dig into this further? ~# ceph status cluster: id: f5129939-964b-11ed-bb6a-f7caa5af2f56 health: HEALTH_OK services: mon: 3 daemons, quorum host1,host2,host3 (age 6d) mgr: host2.nvwzhc(active, since 6d), standbys: host1.wwczzn mds: 1/1 daemons up, 1 standby, 1 hot standby osd: 60 osds: 60 up (since 6d), 60 in (since 8w) tcmu-runner: 2 portals active (2 hosts) data: volumes: 1/1 healthy pools: 6 pools, 2161 pgs objects: 15.42M objects, 45 TiB usage: 135 TiB used, 75 TiB / 210 TiB avail pgs: 2161 active+clean Thanks and kind regards Tobias Hachmer