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Subject: Re: slow index lookup
From: "Joshua D. Drake" <jd@commandprompt.com>
Reply-To: jd@commandprompt.com
To: Anj Adu <fotographs@gmail.com>
Cc: Alvaro Herrera <alvherre@commandprompt.com>,
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Date: Tue, 22 Jun 2010 18:10:15 -0700
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On Tue, 2010-06-22 at 18:00 -0700, Anj Adu wrote:
> i have several partitions like this (similar size ...similar data
> distribution)..these partitions are only "inserted"..never updated.
> Why would I need to vacuum..
> 

An explain analyze is what is in order for further diagnosis.

JD


> I can reindex..just curious what can cause the index to go out of whack.
> 
> On Tue, Jun 22, 2010 at 4:44 PM, Alvaro Herrera
> <alvherre@commandprompt.com> wrote:
> > Excerpts from Anj Adu's message of mar jun 22 17:44:39 -0400 2010:
> >> This query seems unreasonable slow on a well-indexed table (13 million
> >> rows). Separate indexes are present on guardid_id , from_num and
> >> targetprt columns.
> >
> > Maybe you need to vacuum or reindex?
> >
> > --
> > Álvaro Herrera <alvherre@commandprompt.com>
> > The PostgreSQL Company - Command Prompt, Inc.
> > PostgreSQL Replication, Consulting, Custom Development, 24x7 support
> >
> 

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