Re: Make TOAST_TUPLES_PER_PAGE configurable per table. - Mailing list pgsql-hackers

Jesper Krogh <jesper@krogh.cc> writes:
> This patch enables users to set TOAST_TUPLES_PER_PAGE with
> ALTER TABLE <table> SET (tuples_per_page = X); .. currently with 1 <= X
> <= 32;

It's not clear to me that fiddling with that is useful unless the toast
tuple size also changes; and unfortunately changing that is much harder,
because it's wired into the addressing of toast data.  See also these
notes:
* XXX while these can be modified without initdb, some thought needs to be* given to needs_toast_table() in toasting.c
beforeunleashing random* changes.  Also see LOBLKSIZE in large_object.h, which can *not* be* changed without initdb.
 
        regards, tom lane