Re: autovacuum stress-testing our system

On 26 September 2012 15:47, Alvaro Herrera <alvherre@2ndquadrant.com> wrote:
>
> Really, as far as autovacuum is concerned, it would be much more useful
> to be able to reliably detect that a table has been recently vacuumed,
> without having to request a 10ms-recent pgstat snapshot.  That would
> greatly reduce the amount of time autovac spends on pgstat requests.

VACUUMing generates a relcache invalidation. Can we arrange for those
invalidations to be received by autovac launcher, so it gets immediate
feedback of recent activity without polling?

-- Simon Riggs                   http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services