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doc PG 17 relnotes: add item about vacuum storage/limits/WAL 

Reported-by: Alvaro Herrera

Discussion: https://postgr.es/m/202405150838.sg5ddcexyyf4@alvherre.pgsql

Backpatch-through: master
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Bruce Momjian 2024-05-15 22:47:59 -04:00
parent 4dd29b6833
commit a8010d03e1
1 changed files with 19 additions and 0 deletions
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doc/src/sgml/release-17.sgml
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@ -519,6 +519,25 @@ Allow vacuum to more efficiently remove and freeze tuples (Masahiko Sawada, John
</para>
</listitem>
<!--
Author: Masahiko Sawada <msawada@postgresql.org>
2024-03-21 [30e144287] Add TIDStore, to store sets of TIDs (ItemPointerData) ef
Author: Masahiko Sawada <msawada@postgresql.org>
2024-04-02 [667e65aac] Use TidStore for dead tuple TIDs storage during lazy vac
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
2024-04-03 [6dbb49026] Combine freezing and pruning steps in VACUUM
-->
<listitem>
<para>
Allow vacuum to more efficiently store tuple references and remove its memory limit (Masahiko Sawada, John Naylor)
</para>
<para>
Specifically, maintenance_work_mem and autovacuum_work_mem can now be configured to use more than one gigabyte of memory. WAL traffic caused by vacuum is also more compact.
</para>
</listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
2024-01-18 [c120550ed] Optimize vacuuming of relations with no indexes.