From: David Rowley Date: Sun, 4 Jul 2021 10:32:06 +0000 (+1200) Subject: Doc: mention that VACUUM can't utilize over 1GB of RAM X-Git-Tag: REL_10_18~51 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=301d9bb63edc24123f42aded5210617d6e597296;p=thirdparty%2Fpostgresql.git Doc: mention that VACUUM can't utilize over 1GB of RAM Document that setting maintenance_work_mem to values over 1GB has no effect on VACUUM. Reported-by: Martín Marqués Author: Laurenz Albe Discussion: https://postgr.es/m/CABeG9LsZ2ozUMcqtqWu_-GiFKB17ih3p8wBHXcpfnHqhCnsc7A%40mail.gmail.com Backpatch-through: 9.6, oldest supported release --- diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index f70b605ac70..a98919ae90f 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -1529,6 +1529,12 @@ include_dir 'conf.d' too high. It may be useful to control for this by separately setting . + + Additionally, VACUUM is only able to utilize up to + a maximum of 1GB of memory, so + maintenance_work_mem values higher than this have + no effect on VACUUM. +