From: Mladen Gogala <mladen.gogala@vmsinfo.com>
To: J Sisson <sisson.j@gmail.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Postgres 9.0 has a bias against indexes
Date: Thu, 27 Jan 2011 10:57:50 -0500
Message-ID: <4D4195FE.5000506@vmsinfo.com> (raw)
In-Reply-To: <AANLkTi=tGjgSbod36g-2VinN2kz+s5jfGiuR3VbFPTti@mail.gmail.com>
References: <4D419214.8060003@vmsinfo.com>
<AANLkTi=tGjgSbod36g-2VinN2kz+s5jfGiuR3VbFPTti@mail.gmail.com>
On 1/27/2011 10:51 AM, J Sisson wrote:
> Also, if random_page_cost is set to default (4.0), the planner will
> tend towards sequential scans.
scott=> show random_page_cost;
random_page_cost
------------------
1
(1 row)
scott=> show seq_page_cost;
seq_page_cost
---------------
2
(1 row)
--
Mladen Gogala
Sr. Oracle DBA
1500 Broadway
New York, NY 10036
(212) 329-5251
www.vmsinfo.com
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To: pgsql-performance@postgresql.org
Cc: mladen.gogala@vmsinfo.com, sisson.j@gmail.com
Subject: Re: Postgres 9.0 has a bias against indexes
In-Reply-To: <4D4195FE.5000506@vmsinfo.com>
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