On 2014-10-09 18:03:00 -0300, Alvaro Herrera wrote:
> Bruce Momjian wrote:
>
> > I agree this is a serious problem. We have discussed various options,
> > but have not decided on anything. The TODO list has:
> >
> > https://wiki.postgresql.org/wiki/Todo
> >
> > Improve setting of visibility map bits for read-only and insert-only
> > workloads
> >
> > http://www.postgresql.org/message-id/20130906001437.GA29264@momjian.us
>
> I hate to repeat myself, but I think autovacuum could be modified to run
> actions other than vacuum and analyze. In this specific case we could
> be running a table scan that checks only pages that don't have the
> all-visible bit set, and see if it can be set.
Isn't that *precisely* what a plain vacuum run does?
Greetings,
Andres Freund
-- Andres Freund http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
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