| From: | Jelte Fennema-Nio <postgres(at)jeltef(dot)nl> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: First draft of PG 17 release notes |
| Date: | 2024-05-11 13:57:49 |
| Message-ID: | CAGECzQQRxCzr5KuoK6LZpsoKPYZwJ4_gtW6de-cikKECqPcsoA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, 10 May 2024 at 23:31, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > I looked at both of these. In both cases I didn't see why the user
> > would need to know these changes were made:
>
> I agree that the buffering change is not likely interesting, but
> the fact that you can now control-C out of a psql "\c" command
> is user-visible. People might have internalized the fact that
> it didn't work, or created complicated workarounds.
The buffering change improved performance up to ~40% in some of the
benchmarks. The case it improves mostly is COPY of large rows and
streaming a base backup. That sounds user-visible enough to me to
warrant an entry imho.
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