Re: pgsql: Expose the estimation of number of changed tuples since last ana

From: Cédric Villemain <cedric(at)2ndquadrant(dot)com>
To: Magnus Hagander <magnus(at)hagander(dot)net>
Cc: "pgsql-committers" <pgsql-committers(at)postgresql(dot)org>
Subject: Re: pgsql: Expose the estimation of number of changed tuples since last ana
Date: 2013-07-05 14:23:02
Message-ID: 201307051623.06971.cedric@2ndquadrant.com
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Le vendredi 5 juillet 2013 15:44:55, Magnus Hagander a écrit :
> On Fri, Jul 5, 2013 at 3:43 PM, Cédric Villemain <cedric(at)2ndquadrant(dot)com>
wrote:
> >> Expose the estimation of number of changed tuples since last analyze
> >>
> >> This value, now pg_stat_all_tables.n_mod_since_analyze, was already
> >> tracked and used by autovacuum, but not exposed to the user.
> >
> > I though you agreed on a shorter name ? (n_mod_tuple ?)
>
> No, I suggested a shorter name, but was convinced that this would
> likely be more confusing..

I understand (I read the review thread). is it correct to interpret that as
the number of tuples bloating the table ?
I supposed that hot_update was not tracked for autovacuum task, but I have a
doubt now .
--
Cédric Villemain +33 (0)6 20 30 22 52
http://2ndQuadrant.fr/
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