Re: How often do I need to reindex tables?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Bill Moran <wmoran(at)collaborativefusion(dot)com>
Cc: "Ezequias Rodrigues da Rocha" <ezequias(dot)rocha(at)gmail(dot)com>, "Jim C(dot) Nasby" <jim(at)nasby(dot)net>, "Dhaval Shah" <dhaval(dot)shah(dot)m(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: How often do I need to reindex tables?
Date: 2007-02-28 17:22:58
Message-ID: 5314.1172683378@sss.pgh.pa.us
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Bill Moran <wmoran(at)collaborativefusion(dot)com> writes:
> I don't agree. I think that regular indexing is mandatory under some
> workloads. Example:
> ...
> There are some additional indexes that I've snipped from the output that also
> saw some benefit from reindexing, but let's just focus on file_fp_idx.

Can you describe the usage pattern of that index? I'm curious why it
doesn't maintain reasonably static size. How often is the underlying
table vacuumed?

regards, tom lane

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