From: Kevin Grittner <kgrittn@ymail.com>
To: Roberto Grandi <roberto.grandi@trovaprezzi.it>
To: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: COPY TO and VACUUM
Date: Tue, 3 Sep 2013 13:34:30 -0700 (PDT)
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Roberto Grandi <roberto.grandi@trovaprezzi.it> wrote:
> I'm running Postgres 8.4 on Ubuntu 10.4 Linux server (64bit)
> I have a big table tath contains product information: during the
> day we perform a process that import new product continously with
> statemtn COPY TO .. from files to this table.
>
> As result the table disk space is growing fast, it seems that
> postgres is not able to free space for old rows.
COPY TO would not free any space. Is there some other activity you
haven't yet mentioned?
> Is it possible to run a specific autovacuum acivity or say to
> postgres "every time I delete a row, delete it immedialty and
> don't take care of other transactions" ?
You can configure autovacuum to be more aggressive, or you could
run VACUUM statements.
> Do you have any suggestion for me?
8.4 is getting pretty old; there have been a lot of autovacuum
improvements in recent years.
--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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To: pgsql-performance@postgresql.org
Cc: kgrittn@ymail.com, roberto.grandi@trovaprezzi.it
Subject: Re: COPY TO and VACUUM
In-Reply-To: <1378240470.79541.YahooMailNeo@web162905.mail.bf1.yahoo.com>
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