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Re: Tables with lots of dead tuples despite autovacuum

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On Wed, Sep 12, 2012 at 5:00 PM, Wells Oliver <wellsoliver@xxxxxxxxx> wrote:
> We have a few tables that are updated nightly on the order of deleting and
> inserting 500k records.

Out of how many in total?

> I assumed autovacuum would do its thing and clean up the dead tuples, but in
> looking at pg_stat_user_tables, I notice there are lots and lots of dead
> tuples, on the order of a 500-600k.

That is one day's worth.  If the tables undergo churn once a day, and
get vacuum once a day, that seems like a nice steady state.  I
wouldn't worry about it.

Cheers,

Jeff


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