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help / color / mirror / Atom feedFrom: Bruce Momjian <[email protected]>
To: Joe Conway <[email protected]>
Cc: Jelte Fennema-Nio <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: First draft of PG 17 release notes
Date: Mon, 13 May 2024 20:56:26 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
<CAGECzQTz5aUqLEL6daLd2Hu2FXS_LOSh4keDndJ1fwThsb_b5w@mail.gmail.com>
<[email protected]>
<[email protected]>
<CAGECzQQRxCzr5KuoK6LZpsoKPYZwJ4_gtW6de-cikKECqPcsoA@mail.gmail.com>
<[email protected]>
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 <[email protected]> wrote:
> > >
> > > Bruce Momjian <[email protected]> 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 <[email protected]> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
Attachments:
[text/x-diff] master.diff (1.1K, ../[email protected]/2-master.diff)
download | inline diff:
commit e87e7324555
Author: Bruce Momjian <[email protected]>
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_b5w@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 <[email protected]>
+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 <[email protected]>
2024-04-08 [d39a49c1e] Support TLS handshake directly without SSLRequest negoti
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