Lewis Kapell <lkapell(at)setonhome(dot)org> wrote:
> I don't understand what that '256 bytes' refers to. That is a far
> cry from 2kb. I would be grateful if anyone can fill in the
> evident gap in my knowledge here.
It doesn't try to compress anything unless the tuple (row instance)
as a whole is above TOAST_TUPLE_THRESHOLD. In trying to reduce the
tuple size, it won't consider compressing column values below a
certain size. That is where the 256 versus 32 bytes comes in.
-Kevin