It is not a crush map thing. What is the PG/OSD ratio? CEPH recommends 100-200
PG (after multiplying the replica number or EC stripe number) per OSD. But even
though we also observed about 20-40% differences for PG/OSD distribution. You
may try higher PG/OSD ratio but be warned that the messenge
The thread creation depends on the OSD number per host, as well as the
cluster size. You have really a lot (40!!) OSDs on a single node, but the
good part is that you¹ve got a small cluster (only 4 nodes).
If you already run into the problem then the only way is to increase
pid_max. Remember to re
