From: Yeb Havinga <yebhavinga@gmail.com>
To: JOUANIN Nicolas (44) <nicolas.jouanin@dgfip.finances.gouv.fr>
Cc: pgsql-performance@postgresql.org
Subject: Re: Two different execution plan for the same request
Date: Wed, 07 Jul 2010 10:27:05 +0200
Message-ID: <4C343A59.7050908@gmail.com> (raw)
In-Reply-To: <4C3432F0.1090004@dgfip.finances.gouv.fr>
References: <4C3432F0.1090004@dgfip.finances.gouv.fr>
JOUANIN Nicolas (44) wrote:
> Hi,
>
> I've trouble with some SQL request which have different execution
> plans when ran on two different servers. One server is the development
> environment, the othe rone is th pre-production env.
> Both servers run postgreSQL 8.3.0 on Linux and :
> - both databases contains the same data (pg_dump/pg_restore between
> servers)
> - instances have the same configuration parameters
> - vaccum and analyze is run every day.
> The only difference I can see is the hardware. The pre-preoduction
> env. has more RAM, more CPU and a RAID5 disk array through LVM where
> data are stored.
Hello Jouanin,
Could you give some more information following the guidelines from
http://wiki.postgresql.org/wiki/SlowQueryQuestions ?
Essential are the contents from both conf files (comments may be removed).
regards,
Yeb Havinga
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To: pgsql-performance@postgresql.org
Cc: yebhavinga@gmail.com, nicolas.jouanin@dgfip.finances.gouv.fr
Subject: Re: Two different execution plan for the same request
In-Reply-To: <4C343A59.7050908@gmail.com>
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