The following bug has been logged on the website:
Bug reference: 15912
Logged by: Basil Bourque
Email address: basil.bourque@gmail.com
PostgreSQL version: 12beta2
Operating system: macOS
Description:
The `autovacuum_vacuum_cost_delay` setting:
https://www.postgresql.org/docs/devel/runtime-config-autovacuum.html#GUC-AUTOVACUUM-VACUUM-COST-DELAY
…does not specify its units (seconds? milliseconds?) explicitly.
Previously, one could guess that the units were milliseconds.
But now in Postgres 12 the argument type changed from `integer` to `floating
point`. So now the units are quite unclear. I am guessing a whole number
means milliseconds, while the fractional part represents microseconds. But
that is only a guess. Should be documented.
