On Tue, Mar 13, 2012 at 11:34:16AM -0300, Alvaro Herrera wrote:
>
> Excerpts from Bruce Momjian's message of mar mar 13 11:14:43 -0300 2012:
> > On Tue, Mar 13, 2012 at 12:33:09AM -0700, Daniel Farina wrote:
> > > On Mon, Mar 12, 2012 at 8:10 PM, Bruce Momjian <bruce@momjian.us> wrote:
> > > > To answer your specific question, I think clearing the last analyzed
> > > > fields should cause autovacuum to run on analyze those tables. What I
> > > > don't know is whether not clearing the last vacuum datetime will cause
> > > > the table not to be analyzed.
> > >
> > > Thank you very much for this reference. I will look into it.
> >
> > I assume a missing last_analyze would trigger an auto-analyze,
>
> You're wrong. Autovacuum does not consider time, only dead/live tuple
> counts. The formulas it uses are in the autovacuum docs; some details
> (such as the fact that it skips tables that do not have stat entries)
> might be missing.
Oh, yes. Thank you for the correction; not sure what I was thinking.
How would they trigger an autovacuum then?
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
+ It's impossible for everything to be true. +