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doc PG 18 relnotes: split apart log_connections item

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Also add details to asynchronous I/O item.

Reported-by: Melanie Plageman

Discussion: https://postgr.es/m/CAAKRu_YsVvyantS0X0Y_-vp_97=yGaoYJMXXyCEkR7pumAH3Jg@mail.gmail.com
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Bruce Momjian 2025-05-28 22:43:13 -04:00
parent 35a428f30b
commit a1de1b0833
1 changed files with 13 additions and 3 deletions
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16
doc/src/sgml/release-18.sgml
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@ -569,6 +569,7 @@ Add an asynchronous I/O subsystem (Andres Freund, Thomas Munro, Nazir Bilal Yavu
</para>
<para>
This feature allows backends to queue multiple read requests, which allows for more efficient sequential scans, bitmap heap scans, and vacuums.
This is enabled by server variable io_method, with server variables io_combine_limit and io_max_combine_limit added to control it. This also enables
effective_io_concurrency and maintenance_io_concurrency values greater than zero for systems without fadvise() support. The new system view pg_aios shows the file handles being used
for asynchronous I/O.
@ -682,15 +683,12 @@ This more accurately reflects modern hardware.
<!--
Author: Melanie Plageman <melanieplageman@gmail.com>
2025-03-12 [9219093ca] Modularize log_connections output
Author: Melanie Plageman <melanieplageman@gmail.com>
2025-03-12 [18cd15e70] Add connection establishment duration logging
-->
<listitem>
<para>
Increase the logging granularity of server variable log_connections (Melanie Plageman)
<ulink url="&commit_baseurl;9219093ca">&sect;</ulink>
<ulink url="&commit_baseurl;18cd15e70">&sect;</ulink>
</para>
<para>
@ -698,6 +696,18 @@ This server variable was previously only boolean; these options are still suppo
</para>
</listitem>
<!--
Author: Melanie Plageman <melanieplageman@gmail.com>
2025-03-12 [18cd15e70] Add connection establishment duration logging
-->
<listitem>
<para>
Add log_connections option to report the duration of connection stages (Melanie Plageman)
<ulink url="&commit_baseurl;18cd15e70">&sect;</ulink>
</para>
</listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2025-04-07 [3516ea768] Add local-address escape "%L" to log_line_prefix.