From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
---|---|
To: | Itagaki Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> |
Cc: | pgsql-bugs(at)postgresql(dot)org |
Subject: | Re: fillfactor hides autovacuum parameters in 8.4.0 |
Date: | 2009-08-20 03:27:15 |
Message-ID: | 20090820032715.GD6781@alvh.no-ip.org |
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Lists: | pgsql-bugs pgsql-hackers |
Itagaki Takahiro wrote:
>
> Alvaro Herrera <alvherre(at)commandprompt(dot)com> wrote:
>
> > > We should remember whether a field was specified or not independntly.
> > I'm not sure what you are suggesting ...?
>
> Please imagine that:
>
> =# SET autovacuum_vacuum_scale_factor = 0.05;
> =# ALTER TABLE tbl SET (autovacuum_vacuum_threshold = 10);
Uh, but this doesn't work because you can't SET inside a session and
have autovacuum read it. Only the values that you change with ALTER
TABLE can be read by autovacuum; the rest of the values come from
postgresql.conf.
But I'm very dizzy today so perhaps I'm missing something obvious.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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