On Mon, Feb 02, 2004 at 12:34:50PM -0800, Ian Harding wrote:
> I have compiled a kernel having made the following changes to my 
> configuration
> 
> < #options      SEMMNI=10       # number of semaphore identifiers
> < #options      SEMMNS=60       # number of semaphores in system
> < #options      SEMUME=10       # max number of undo entries per process
> < #options      SEMMNU=30       # number of undo structures in system
> ---
> > options       SEMMNI=256      # number of semaphore identifiers
> > options       SEMMNS=512      # number of semaphores in system
> > options       SEMUME=40       # max number of undo entries per process
> > options       SEMMNU=256      # number of undo structures in system
> 80c80
> < #options      SHMMAXPGS=1024  # 1024 pages is the default
> ---
> > options       SHMMAXPGS=16192 # 1024 pages is the default

I think you are fine:

Just for reference my configuration says:

options     SHMMAXPGS=32768 # 2048 pages is the default
# PostgreSQL notes:
#options    SHMMAXPGS=8192  # (2048) 512 kB + 8192 * buffers + extra
#options    SEMMNI=64   # (10) >= ceil(max_connections / 16)
#options    SEMMNS=256  # (60) ceil(max_connections / 16) * 17 + extra

(on i386, 1 page = 4k)

You have 1000 buffers, 16 connections, so
512 kB + 8k * 1000 buffers = 8512kB = 2128 pages < 16192 pages as configured.

> IpcMemoryCreate: shmget(key=5432001, size=10035200, 03600) failed: 
and size < 16192*4k

So, could it be that your pages are still in use? eg., if you switch off
the postmaster, does
	ipcs -a
still show you entries for postgres? (ipcrm lets you clear them)

Cheers,

Patrick