Re: bgwriter_lru_multiplier maximum value

On Mon, Apr 01, 2019 at 10:27:13AM +0000, PG Doc comments form wrote:
> The server has an undocumented maximum value of 10 for
> bgwriter_lru_multiplier, and will fail to start if it's set higher than
> this:
>
> LOG: 20 is outside the valid range for parameter "bgwriter_lru_multiplier"
> (0 .. 10)
> FATAL: configuration file "/.../pgdata/postgresql.conf" contains errors

I would suggest something like that:
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -2050,7 +2050,8 @@ include_dir 'conf.d'
Larger values provide some cushion against spikes in demand,
while smaller values intentionally leave writes to be done by
server processes.
- The default is 2.0.
+ The default is 2.0. The value can range from <literal>2.0</literal>
+ to <literal>10.0</literal>
This parameter can only be set in the <filename>postgresql.conf</filename>
file or on the server command line.
</para>

Any opinions from others?
--
Michael