On Sat, May 11, 2024 at 10:24:39AM -0400, Joe Conway wrote:
> On 5/11/24 09:57, Jelte Fennema-Nio wrote:
> > On Fri, 10 May 2024 at 23:31, Tom Lane <t...@sss.pgh.pa.us> wrote:
> > >
> > > Bruce Momjian <br...@momjian.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.
>
> +1
Attached patch applied.
--
Bruce Momjian <br...@momjian.us> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
commit e87e7324555
Author: Bruce Momjian <br...@momjian.us>
Date: Mon May 13 20:55:13 2024 -0400
doc PG 17 relnotes: add item about libpq large data transfers
Reported-by: Jelte Fennema-Nio
Discussion: https://postgr.es/m/cageczqtz5auqlel6dald2hu2fxs_losh4kedndj1fwthsb_...@mail.gmail.com
Reviewed-by: Joe Conway
Backpatch-through: master
diff --git a/doc/src/sgml/release-17.sgml b/doc/src/sgml/release-17.sgml
index 9dd3954f3c2..38c14970822 100644
--- a/doc/src/sgml/release-17.sgml
+++ b/doc/src/sgml/release-17.sgml
@@ -1901,6 +1901,17 @@ Add libpq function PQsetChunkedRowsMode to allow retrieval of results in chunks
</para>
</listitem>
+<!--
+Author: David Rowley <drow...@postgresql.org>
+2024-04-07 [c4ab7da60] Avoid needless large memcpys in libpq socket writing
+-->
+
+<listitem>
+<para>
+Allow libpq to more efficiently transfer large blocks of data (Melih Mutlu)
+</para>
+</listitem>
+
<!--
Author: Heikki Linnakangas <heikki.linnakan...@iki.fi>
2024-04-08 [d39a49c1e] Support TLS handshake directly without SSLRequest negoti
