Re: plain inserts and deletes very slow

From: Enrico Weigelt <weigelt(at)metux(dot)de>
To: postgresql performance list <pgsql-performance(at)postgresql(dot)org>
Subject: Re: plain inserts and deletes very slow
Date: 2005-07-04 00:01:57
Message-ID: 20050704000157.GD9777@nibiru.borg.metux.de
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* David Mitchell <david(dot)mitchell(at)telogis(dot)com> wrote:
> Did you vacuum full?
>
> When you do lots of inserts and deletes, dead tuples get left behind.
> When you vacuum, postgres will reuse those dead tuples, but if you don't
> vacuum for a long time these tuples will build up lots. Even when you
> vacuum in this case, the dead tuples are still there, although they are
> marked for reuse. Vacuuming full actually removes the dead tuples.

I'm doing a VACUUM ANALYZE every 6 hours.

vacuum'ing manually doesnt seem to have any effect on that.

cu
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