Re: Deferring some AtStart* allocations?

Andres Freund <andres@2ndquadrant.com> writes:
> Why aren't we delaying allocations in e.g. AtStart_Inval(),
> AfterTriggerBeginXact() to when the data structures are acutally used?

Aren't we?  Neither of those would be doing much work certainly.
        regards, tom lane