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doc: vacuum_cost_limit controls when vacuum_cost_delay happens 

Mention this relationship.

Reported-by: Martín Marqués

Discussion: https://postgr.es/m/CABeG9LtsAVP4waKngUYo-HAiiowcb8xEjQvDDfhX_nFi5SJ4jw@mail.gmail.com

Author: Martín Marqués

Backpatch-through: master
This commit is contained in:
Bruce Momjian 2023-11-21 15:32:04 -05:00
parent afc3b0143c
commit 3af101ce8b
1 changed files with 4 additions and 4 deletions
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8
doc/src/sgml/config.sgml
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@ -2303,8 +2303,8 @@ include_dir 'conf.d'
</term>
<listitem>
<para>
The accumulated cost that will cause the vacuuming process to sleep.
The default value is 200.
This is the accumulated cost that will cause the vacuuming process to sleep
for <varname>vacuum_cost_delay</varname>. The default is 200.
</para>
</listitem>
</varlistentry>
@ -2364,7 +2364,7 @@ include_dir 'conf.d'
<varname>bgwriter_delay</varname>.
If this value is specified without units, it is taken as milliseconds.
The default value is 200
milliseconds (<literal>200ms</literal>). Note that on many systems, the
milliseconds (<literal>200ms</literal>). Note that on some systems, the
effective resolution of sleep delays is 10 milliseconds; setting
<varname>bgwriter_delay</varname> to a value that is not a multiple of 10
might have the same results as setting it to the next higher multiple
@ -3258,7 +3258,7 @@ include_dir 'conf.d'
flushed to disk.
If this value is specified without units, it is taken as milliseconds.
The default value is 200 milliseconds (<literal>200ms</literal>). Note that
on many systems, the effective resolution of sleep delays is 10
on some systems, the effective resolution of sleep delays is 10
milliseconds; setting <varname>wal_writer_delay</varname> to a value that is
not a multiple of 10 might have the same results as setting it to the
next higher multiple of 10. This parameter can only be set in the