Re: The suggestion of reducing autovacuum_vacuum_cost_delay shouldbe documented

On Tue, May 12, 2020 at 10:26:27AM +0000, PG Doc comments form wrote:
> The following documentation comment has been logged on the website:
> 
> Page: https://www.postgresql.org/docs/11/runtime-config-autovacuum.html
> Description:
> 
> The `autovacuum_vacuum_cost_delay` setting changes to 2ms in PostgreSQL 12
> but in the old Postgresql version, the default setting is still 20ms. I
> would suggest adding a suggestion in the old document
> to lower the autovacuum_vacuum_cost_delay as:
> 
> > The default value of autovacuum_vacuum_cost_delay is reduced to 2ms in
> PostgreSQL 12. Reducing the autovacuum_vacuum_cost_delay will make the
> autovacuum more aggressive and might reduce the vacuum cost for
> write-intensive workload on big table.

Uh, we usually don't suggest new defaults in back branches.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EnterpriseDB                             https://enterprisedb.com

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