Re: reduce size of fmgr_builtins array

On Tue, Jan 7, 2020 at 9:08 PM Heikki Linnakangas <hlinnaka@iki.fi> wrote:
> Yeah. Nevertheless, it would be nice to be able to demonstrate the
> benefit in some test, at least. It feels hard to justify committing a
> performance patch if we can't show the benefit. Otherwise, we should
> just try to keep it as simple as possible, to optimize for readability.
>
> A similar approach was actually discussed a couple of years back:
> https://www.postgresql.org/message-id/bd13812c-c4ae-3788-5b28-5633beed2929%40iki.fi.
> The conclusion then was that it's not worth the trouble or the code
> complication. So I think this patch is Rejected, unless you can come up
> with a test case that concretely shows the benefit.

Thanks for reviewing! As expected, a microbenchmark didn't show a
difference. I could try profiling in some workload, but I don't think
the benefit would be worth the effort involved. I've marked it
rejected.

-- 
John Naylor                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services