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-rw-r--r--doc/src/sgml/config.sgml14
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 32c8fb8ea92..e500b1fdecc 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -1618,10 +1618,9 @@ include_dir 'conf.d'
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>.
+ Note that for the collection of dead tuple identifiers,
+ <command>VACUUM</command> is only able to utilize up to a maximum of
+ <literal>1GB</literal> of memory.
</para>
</listitem>
</varlistentry>
@@ -1643,6 +1642,13 @@ include_dir 'conf.d'
<filename>postgresql.conf</filename> file or on the server command
line.
</para>
+ <para>
+ For the collection of dead tuple identifiers, autovacuum is only able
+ to utilize up to a maximum of <literal>1GB</literal> of memory, so
+ setting <varname>autovacuum_work_mem</varname> to a value higher than
+ that has no effect on the number of dead tuples that autovacuum can
+ collect while scanning a table.
+ </para>
</listitem>
</varlistentry>