Re: enabling autovacuum

Jeremy Harris wrote:
> Hi,
>
> We're starting to run autovacuum for the first time on a system
> that's been running with nightly cron-driven vacuum for some time.
>
> Version:
>  PostgreSQL 8.2.4 on i686-redhat-linux-gnu, compiled by GCC gcc (GCC)
> 4.1.2 20070418 (Red Hat 4.1.2-10)
>
> We have one problematic table, which has a steady stream of entries
> and a weekly mass-delete of ancient history.  The "bloat" query from
> Greg Sabino Mullane (thanks to Greg Smith for pointing it out) returns:
Inserts don't generate dead tuples, and AVD looks at obsolete tuples..
As such,  I wouldn't expect AVD to kick off until after you did a mass
delete...assuming that delete was sizable enough to trigger a vacuum.

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Chander Ganesan
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