Sam Mason <sam@samason.me.uk> writes:
> On Tue, Nov 11, 2008 at 02:17:20PM -0300, Alvaro Herrera wrote:
>> shared_buffers is not the only factor to shared memory, so you need to
>> provide some extra SHMMAX slop.
> what is this "extra slop" needed for?
See table 17-2 here
http://www.postgresql.org/docs/8.3/static/kernel-resources.html#SYSVIPC
regards, tom lane