Re: Adjusting Shared Memory with sysctl.conf not working?

[Doug Graham <duggram(at)gmail(dot)com>]

I've tried all kinds of values.  For sure I've tried the ones that Postgres
says will work at least 6 times.  I wonder if this is a bug?

Doug

On Fri, Mar 27, 2009 at 3:22 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> 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
>