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

Reported-by: Alvaro Herrera
Discussion: https://postgr.es/m/202405150838[email protected]

Backpatch-through: master

diff --git a/doc/src/sgml/release-17.sgml b/doc/src/sgml/release-17.sgml
index e68c499e0db1af6c4c6de6690603e244145d0d20..7f36a35954dd1f435e118795e79ff690fdb2aaee 100644 (file)
--- a/doc/src/sgml/release-17.sgml
+++ b/doc/src/sgml/release-17.sgml
@@ -519,6 +519,25 @@ Allow vacuum to more efficiently remove and freeze tuples (Masahiko Sawada, John
 
 
 
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+Allow vacuum to more efficiently store tuple references and remove its memory limit (Masahiko Sawada, John Naylor)
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+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.
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