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RE: [INTERFACES] Vacuum takes for ever

From: "Jackson, DeJuan" <djackson(at)cpsgroup(dot)com>
To: Jason Earl <jearl(at)box100(dot)com>, eg(at)tzv(dot)fal(dot)de
Cc: pgsql-interfaces(at)postgreSQL(dot)org
Subject: RE: [INTERFACES] Vacuum takes for ever
Date: 1999-05-17 18:45:15
Message-ID: D05EF808F2DFD211AE4A00105AA1B5D216F043@cpsmail (view raw, whole thread or download thread mbox)
Lists: pgsql-interfaces
vacuum - adjusts the rows in a disk file (it might do more)
vacuum analyze - does the above and updates the table's statistics for
>    Hello everyone,
>    in a substantial multi location development project we are using PG
>    to create a large information system.  After having loaded data in
>    the order of one million records a vaccum took 50h of CPU time on a
>    350MHz PII (RedHat 5.2, pg 6.4.2). There were no deletes or anyting
>    like that.
> I made a test database when I was deciding whether PostgreSQL was
> going to be up to the task.  It just so happens that it had a million
> records in it as well.  The first vacuum took a very very long time,
> subsequent vacuums, however, took much less time.
>    What does vaccum do that takes so long and is there a way to speed
>    this up?
> Apparently it does some "database stuff."  Yikes, someone else will
> have to answer that question.  I just know how to get data in and out
> of PostgreSQL.
> Jason Earl

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Subject: Re: [INTERFACES] JDBC driver should use database encoding
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Subject: Re: [INTERFACES] Vacuum takes for ever

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