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| author | David Rowley <drowley@postgresql.org> | 2021-07-04 22:29:16 +1200 |
|---|---|---|
| committer | David Rowley <drowley@postgresql.org> | 2021-07-04 22:29:16 +1200 |
| commit | b88e5fe60eef5decd3ccfd73566559dc6136cb61 (patch) | |
| tree | 7d3d38a44138323dde2c64102db0a598fafb485c | |
| parent | e033e260b9d0fcba969e5314be967429ade1b9ec (diff) | |
| download | postgresql-b88e5fe60eef5decd3ccfd73566559dc6136cb61.tar.gz postgresql-b88e5fe60eef5decd3ccfd73566559dc6136cb61.zip | |
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
| -rw-r--r-- | doc/src/sgml/config.sgml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 3eee9883595..1bbc631afe5 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -1893,6 +1893,12 @@ include_dir 'conf.d' too high. It may be useful to control for this by separately setting <xref linkend="guc-autovacuum-work-mem"/>. </para> + <para> + Additionally, <command>VACUUM</command> is only able to utilize up to + a maximum of <literal>1GB</literal> of memory, so + <varname>maintenance_work_mem</varname> values higher than this have + no effect on <command>VACUUM</command>. + </para> </listitem> </varlistentry> |