On Sat, 3 Jun 2023 at 00:14, Jonathan S. Katz <jkatz@postgresql.org> wrote:
> Typically once a release announcement is out, we'll only edit it if it's
> inaccurate. I don't think the statement in the release announcement is
> inaccurate, as it specifies that concurrent bulk loading is faster.
Understood. I had thought that the policy might be that if there's
room for and reason enough to make improvements, then we probably
should. We do aim to still make improvements to fix any problem with
the software that's the topic of the announcement, maybe it's strange
that we want to lock down what we write about that software just
before the beta1 release.
> I'm -0.5 for revising the announcement, but I also don't want people to
> miss out on testing this. I'd be OK with this:
>
> "PostgreSQL 16 can also improve the performance of bulk loading of data,
> with some tests showing using up to 300% improvement when concurrently
> executing `COPY` commands."
I might have just misunderstood the release notes based on my
misunderstanding of Andres's work that it only improved things when
multiple backends were extending the relation at the same time. The
release announcement did seem to confirm that there had to be
concurrency, so it might be good to not lead anyone else down into
thinking that only concurrent cases are faster. I certainly understand
that's where the big wins are.
I'm fine with your proposed wording.
David