Re: [infinispan-dev] Ceph cache store

AFAIK this is not mandatory, cluster with capacity of dozen of petabytes should be fine for the initial testing and learning :-) you can find some general performance tuning tips like [1], but I'm not aware of any recommended usage patterns. However, I'm Ceph beginner, so maybe it's just my ignorance. As for ceph-ispn specifically, I'd like to learn more about CRUSH algorithm and CRUSH map options [2] if it would be possible to map ISPN segment to specified Ceph primary OSD, which would allow us to run ISPN node and it's appropriate primary OSD on the same machine (similar thing we do in ISPN-Spark integration), which should result into better performance. [1] http://tracker.ceph.com/projects/ceph/wiki/7_Best_Practices_to_Maximize_Y... [2] http://docs.ceph.com/docs/jewel/rados/operations/crush-map/