Re: First draft of PG 17 release notes

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: David Rowley <dgrowleyml(at)gmail(dot)com>
Cc: Andres Freund <andres(at)anarazel(dot)de>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Melanie Plageman <melanieplageman(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: First draft of PG 17 release notes
Date: 2024-05-24 03:04:43
Message-ID: ZlADy0VFUUuFvg9D@momjian.us
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On Thu, May 23, 2024 at 02:27:07PM +1200, David Rowley wrote:
> On Thu, 23 May 2024 at 14:01, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> >
> > On Thu, May 23, 2024 at 01:34:10PM +1200, David Rowley wrote:
> > > What is the best way to communicate this stuff so it's easily
> > > identifiable when you parse the commit messages?
> >
> > This is why I think we need an "Internal Performance" section where we
> > can be clear about simple scaling improvements that might have no
> > user-visible explanation. I would suggest putting it after our "Source
> > code" section.
>
> hmm, but that does not really answer my question. There's still a
> communication barrier if you're parsing the commit messages are
> committers don't clearly state some performance improvement numbers
> for the reason I stated.

For a case where O(N^2) become O(N), we might not even know the
performance change since it is a micro-optimization. That is why I
suggested we call it "Internal Performance".

> I also don't agree these should be left to "Source code" section. I
> feel that section is best suited for extension authors who might care
> about some internal API change. I'm talking of stuff that makes some
> user queries possibly N times (!) faster. Surely "Source Code" isn't
> the place to talk about that?

I said a new section "after our 'Source code' section," not in the
source code section.

--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com

Only you can decide what is important to you.

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