Re: Autovacuum on by default?

On Thu, Aug 24, 2006 at 01:48:50PM -0400, Alvaro Herrera wrote:
> Tom Lane wrote:
> > "Jim C. Nasby" <jnasby@pervasive.com> writes:
> > > On Thu, Aug 24, 2006 at 09:58:10AM -0400, Tom Lane wrote:
> > >> Alvaro Herrera <alvherre@commandprompt.com> writes:
> > >>> I think there is a reasonable case for saying that a manual vacuum could
> > >>> hint pgstat to create the entry instead.
> > >> 
> > >> The problem with that is that a simple "VACUUM;" would force pgstat to
> > >> populate its entire hashtable.
> > 
> > > Maybe a good compromise would be only populating info for tables that
> > > had dead tuples... that would eliminate any static tables, and most DBAs
> > > should know that those tables are static.
> > 
> > Hm, that definitely seems like an idea.  Does the current pgstat message
> > from vacuum tell how many rows it deleted?
> 
> Hum, no.

ISTM that wouldn't be bad info to track either... how many dead tuples
the last [auto]vacuum encountered.
-- 
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461