Re: [HACKERS] Autovacuum loose ends

Updated this patch again:

> > - vacuum_cost_delay and vacuum_cost_limit can be set per table, as well
> >   as globally with autovacuum_vacuum_cost_{limit,delay}
> > 
> > - pgstat is reset if recovery is required
> > 
> > - pgstat reset at postmaster start is disabled by default
> 
> - Xid-wraparound VACUUM is now FREEZE without ANALYZE, iff the database
>   has datallowconn=false or datistemplate=true

- A database-wide vacuum is also issued if the vacuumxid is found to be
  very old.

Note that I had to add datvacuumxid to the pg_database flat file.

-- 
Alvaro Herrera ()
"Ciencias políticas es la ciencia de entender por qué
 los políticos actúan como lo hacen"  (netfunny.com)