From: Alvaro Herrera <alvherre@commandprompt.com>
To: Karl Wright <kwright@metacarta.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-performance@postgresql.org
Subject: Re: Performance query about large tables, lots of concurrent access
Date: Tue, 19 Jun 2007 09:26:43 -0400
Message-ID: <20070619132643.GC4265@alvh.no-ip.org> (raw)
In-Reply-To: <4677D298.2010109@metacarta.com>
References: <4676DD57.7070304@metacarta.com>
<14291.1182221811@sss.pgh.pa.us>
<4677B831.8060704@metacarta.com>
<4677D298.2010109@metacarta.com>
Karl Wright wrote:
> This particular run lasted four days before a VACUUM became essential.
> The symptom that indicates that VACUUM is needed seems to be that the
> CPU usage of any given postgresql query skyrockets. Is this essentially
> correct?
Are you saying you weren't used to run VACUUM all the time? If so,
that's where the problem lies.
--
Alvaro Herrera http://www.amazon.com/gp/registry/CTMLCN8V17R4
"Cómo ponemos nuestros dedos en la arcilla del otro. Eso es la amistad; jugar
al alfarero y ver qué formas se pueden sacar del otro" (C. Halloway en
La Feria de las Tinieblas, R. Bradbury)
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To: pgsql-performance@postgresql.org
Cc: alvherre@commandprompt.com, kwright@metacarta.com, tgl@sss.pgh.pa.us
Subject: Re: Performance query about large tables, lots of concurrent access
In-Reply-To: <20070619132643.GC4265@alvh.no-ip.org>
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