Re: vacuum vs pg_repack for clearing bloat? - Mailing list pgsql-general

From Tom Lane
Subject Re: vacuum vs pg_repack for clearing bloat?
Date
Msg-id 6239.1389831842@sss.pgh.pa.us
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In response to vacuum vs pg_repack for clearing bloat?  (Lists <lists@benjamindsmith.com>)
Responses Re: vacuum vs pg_repack for clearing bloat?
List pgsql-general
Lists <lists@benjamindsmith.com> writes:
> Our app makes extensive use of temp tables, and this causes a
> significant amount of bloat that can often only be cleared with a manual
> vacuum process. We're looking for a better way that doesn't involve
> locking, we found pg_repack and pg_reorg  and were wondering if anybody
> here could weigh in on using this instead of using vacuum?

A temp table is only accessible to the owning process, so if you're hoping
for vacuuming of it to happen silently in background, you'll be sadly
disappointed.  The speed advantage of a temp table come exactly from not
having to worry about concurrent access, so this isn't a tradeoff that can
easily be adjusted.

            regards, tom lane


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