> So, pg_autovacuum does deal with them separately, but doesn't make an
> effort to spread out the vacuums if all / multiple databases happen to
> need it at the same time.
>
> In practice, I don't see this as a big problem right now, but it should
> still be handled better by pg_autovacuum.
I understand now, and yes, it does make sense to try to level off spikes
in vacuum requests so that there is an even flow.