[ceph-users] Re: avg apply latency went up after update from octopus to pacific

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What I also see is that I have three OSDs that have quite a lot of OMAP data, in compare to other OSDs (~20 time higher). I don't know if this is an issue:

I have on 2TB ssd's with 2GB - 4GB omap data, while on 8TB hdd's the omap data is only 53MB - 100MB. Should I manually clean this? (how? :))

The amount of omap data depends on multiple things, especially the use-case. If a given OSD is only used for RBD, it will have a different omap experience than if it were used for an RGW index pool.