Actually, I think I may have solved it, but I would like someone to verify it. The temp_buffers takes up 8MB which suggests that needs to be taken into account, so 256MB - 8MB = 248MB. Is this right? Thanks Thom On Tue, Nov 11, 2008 at 4:57 PM, Thom Brown <thombrown@xxxxxxxxx> wrote: > Hi, > > I've noticed that if I set my SHMMAX to 256 * 1024 * 1024 (268435456) > and my shared_buffers value in postgresql.conf to 256MB the server > fails to start. I managed to find a tipping point: 249MB seems to be > too much and 248MB seems to be okay. > > Could someone explain what I'm missing here? I thought the > shared_buffers could be anything up to SHMMAX? > > Thanks in advance > > Thom > -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general