Re: When does VACUUM FULL not clean out all deleted data?

James Cloos wrote:
>>>>>> "Tom" == Tom Lane <tgl@sss.pgh.pa.us> writes:
>
>>> Why was the db using that extra five plus gigs?
>
> Tom> Smells like a hadn't-been-vacuuming-often-enough problem.
>
> Sorry, I forgot to mention:  autovacuum was enabled and I also ran
> this script every night via cron:
>
> #!/bin/bash
> FULL=''
> test $(date +%w) -eq 0 && FULL='FULL'
> exec psql -U dbm -c "VACUUM ${FULL} VERBOSE ANALYZE" dbm
>
> The app at least felt faster with the daily vacuum, even though
> autovacuum was running.  I don't have a good explanation for that,
> either.

Autovacuum by default won't do enough work for many production
databases. You still have to configure it.

Joshua D. Drake