In response to Christiaan Willemsen <cwillemsen@xxxxxxxxxxxxx>:
#sysctl -a | grep shm
kern.ipc.shm_allow_removed: 0
kern.ipc.shm_use_phys: 1
kern.ipc.shmall: 68719476736
kern.ipc.shmseg: 128
kern.ipc.shmmni: 192
kern.ipc.shmmin: 1
kern.ipc.shmmax: 68719476736
Try bumping shmmni:
$ sysctl -d kern.ipc.shmmni
kern.ipc.shmmni: Number of shared memory identifiers
I have this set to 1000 on most of my systems. Can't seem to find my
notes on it right now, but that may be your holdup. The PG docs seem
to indicate that this number can be set very low, as PG only needs a
single identifier, but I must have had _some_ reason for raising it.
