[ceph-users] PG Sizing Question

Hello Looking to get some official guidance on PG and PGP sizing. Is the goal to maintain approximately 100 PGs per OSD per pool or for the cluster general? Assume the following scenario: Cluster with 80 OSD across 8 nodes; 3 Pools: - Pool1 = Replicated 3x - Pool2 = Replicated 3x - Pool3 = Erasure Coded 6-4 Assuming the well published formula: Let (Target PGs / OSD) = 100 [ (Target PGs / OSD) * (# of OSDs) ] / (Replica Size) - Pool1 = (100*80)/3 = 2666.67 => 4096 - Pool2 = (100*80)/3 = 2666.67 => 4096 - Pool3 = (100*80)/10 = 800 => 1024 Total cluster would have 9216 PGs and PGPs. Are there any implications (performance / monitor / MDS / RGW sizing) with how many PGs are created on the cluster? Looking for validation and / or clarification of the above. Thank you.