From: Robert Haas <robertmhaas@gmail.com>
To: Anne Rosset <arosset@collab.net>
Cc: Alvaro Herrera <alvherre@commandprompt.com>
Cc: Richard Huxton <dev@archonet.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Need help with one query
Date: Fri, 20 Mar 2009 20:37:52 -0400
Message-ID: <603c8f070903201737u7543a26w62f265d2352318f5@mail.gmail.com> (raw)
In-Reply-To: <49C3FC8E.9070004@collab.net>
References: <49C2AC75.5060601@collab.net>
<49C3600E.20504@archonet.com>
<49C3CF52.9090602@collab.net>
<603c8f070903201204s53f2a3cvbf9afc8649b2201a@mail.gmail.com>
<20090320191453.GM8313@alvh.no-ip.org>
<49C3FC8E.9070004@collab.net>
On Fri, Mar 20, 2009 at 4:29 PM, Anne Rosset <arosset@collab.net> wrote:
> Alvaro Herrera wrote:
>> Robert Haas escribió:
>>> Something is wrong here. How can setting enable_seqscan to off result
>>> in a plan with a far lower estimated cost than the original plan? If
>>> the planner thought the non-seq-scan plan is cheaper, it would have
>>> picked that one to begin with.
>>>
>>
>> GEQO? Anne, what's geqo_threshold set to?
> Hi Alvaro:
> It is turned off
> geqo | off | Enables genetic query optimization.
> Thanks,
> Anne
Can you please send ALL your non-commented postgresql.conf lines?
...Robert
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To: pgsql-performance@postgresql.org
Cc: robertmhaas@gmail.com, arosset@collab.net, alvherre@commandprompt.com, dev@archonet.com
Subject: Re: Need help with one query
In-Reply-To: <603c8f070903201737u7543a26w62f265d2352318f5@mail.gmail.com>
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