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Remove outdated comment about relation level autovacuum freeze limits.

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The documentation for the autovacuum_multixact_freeze_max_age and
autovacuum_freeze_max_age relation level parameters contained:
"Note that while you can set autovacuum_multixact_freeze_max_age very
small, or even zero, this is usually unwise since it will force frequent
vacuuming."
which hasn't been true since these options were made relation options,
instead of residing in the pg_autovacuum table (834a6da4f7).

Remove the outdated sentence. Even the lowered limits from 2596d70 are
high enough that this doesn't warrant calling out the risk in the CREATE
TABLE docs.

Per discussion with Tom Lane and Alvaro Herrera

Discussion: 26377.1443105453@sss.pgh.pa.us
Backpatch: 9.0- (in parts)
This commit is contained in:
Andres Freund 2015-10-05 16:09:13 +02:00
parent be400cd25c
commit 10cfd6f854
1 changed files with 2 additions and 7 deletions
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9
doc/src/sgml/ref/create_table.sgml
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@ -1009,9 +1009,7 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXI
Custom <xref linkend="guc-autovacuum-freeze-max-age"> parameter. Note that Custom <xref linkend="guc-autovacuum-freeze-max-age"> parameter. Note that
autovacuum will ignore attempts to set a per-table autovacuum will ignore attempts to set a per-table
<literal>autovacuum_freeze_max_age</> larger than the system-wide setting <literal>autovacuum_freeze_max_age</> larger than the system-wide setting
(it can only be set smaller). Note that while you can set (it can only be set smaller).
<literal>autovacuum_freeze_max_age</> very small, or even zero, this is
usually unwise since it will force frequent vacuuming.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@ -1045,10 +1043,7 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXI
Custom <xref linkend="guc-autovacuum-multixact-freeze-max-age"> parameter. Note Custom <xref linkend="guc-autovacuum-multixact-freeze-max-age"> parameter. Note
that autovacuum will ignore attempts to set a per-table that autovacuum will ignore attempts to set a per-table
<literal>autovacuum_multixact_freeze_max_age</> larger than the <literal>autovacuum_multixact_freeze_max_age</> larger than the
system-wide setting (it can only be set smaller). Note that while you system-wide setting (it can only be set smaller).
can set <literal>autovacuum_multixact_freeze_max_age</> very small,
or even zero, this is usually unwise since it will force frequent
vacuuming.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>