Re: Query times change by orders of magnitude as DB ages

From: Matthew Wakeling <matthew(at)flymine(dot)org>
To: Richard Neill <rn214(at)cam(dot)ac(dot)uk>
Cc: PostgreSQL Performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Query times change by orders of magnitude as DB ages
Date: 2009-11-23 12:44:05
Message-ID: alpine.DEB.2.00.0911231103420.684@aragorn.flymine.org
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance

On Sun, 22 Nov 2009, Richard Neill wrote:
> Worse still, doing a cluster of most of the tables and vacuum full analyze

Why are you doing a vacuum full? That command is not meant to be used
except in the most unusual of circumstances, as it causes bloat to
indexes.

If you have run a cluster command, then running vacuum full will make the
table and index layout worse, not better.

Matthew

--
Riker: Our memory pathways have become accustomed to your sensory input.
Data: I understand - I'm fond of you too, Commander. And you too Counsellor

In response to

Responses

Browse pgsql-performance by date

  From Date Subject
Next Message Jonathan Blitz 2009-11-23 14:10:57 Re: Why is the query not using the index for sorting?
Previous Message Matthew Wakeling 2009-11-23 11:00:09 Re: Why is the query not using the index for sorting?