Doug Graham <duggram(at)gmail(dot)com> writes:
> Reboot multiple times. Here's what shared memory I have running now:
> DougMBP:~ duggram$ sysctl -a | grep shm
> kern.exec: unknown type returned
> kern.sysv.shmall: 16777216
> kern.sysv.shmseg: 8
> kern.sysv.shmmni: 4096
> kern.sysv.shmmin: 1
> kern.sysv.shmmax: 4194304
My MBP has
kern.sysv.shmall: 8192
kern.sysv.shmseg: 8
kern.sysv.shmmni: 32
kern.sysv.shmmin: 1
kern.sysv.shmmax: 33554432
I think you possibly have the meaning/units for shmall and shmmax
reversed. shmall is in pages, shmmax is in bytes. I wouldn't be
surprised if the shmall value you're trying to stuff in there is
overflowing to zero...
regards, tom lane