[ceph-users] enabling pg_autoscaler on a large production storage?

Hi, I would like to enable the pg_autoscaler on our nautilus cluster. Someone told me that I should be really really careful to NOT have customer impact. Maybe someone can share some experience on this? The Cluster got 455 OSDs on 19 hosts with ~17000 PGs and ~1petabyte raw storage where ~600TB raw is used.