[ceph-users] Re: CEPH Cluster performance review

2023-11-11 Thread Anthony D'Atri
I'm going to assume that ALL of your pools are replicated with size 3, since you didn't provide that info, and that all but the *hdd pools are on SSDs. `ceph osd dump | grep pool` Let me know if that isn't the case. With that assumption, I make your pg ratio to be ~ 57, which is way too low.

[ceph-users] CEPH Cluster performance review

2023-11-11 Thread Mosharaf Hossain
Hello Community Currently, I operate a CEPH Cluster utilizing Ceph Octopus version 1.5.2.7, installed through Ansible. The challenge I'm encountering is that, during scrubbing, OSD latency spikes to 300-600 ms, resulting in sluggish performance for all VMs. Additionally, some OSDs fail during the