On 2016-08-24 22:33:49 -0400, Tom Lane wrote:
> > Possibly it would make sense for this to be configurable at initdb
> > time instead of requiring a recompile;
>
> ... but I think this is just folly. You'd have to do major amounts
> of work to keep, eg, slave servers on the same page as the master
> about what the segment size is.
Don't think it'd actually be all that complicated, we already verify
the compatibility of some things. But I'm doubtful it's worth it, and
I'm also rather doubtful that it's actually without overhead.
Andres