Re: Re: Increasing work_mem and shared_buffers on Postgres 9.2 significantly slows down queries

From: "Gunnar \"Nick\" Bluth" <gunnar(dot)bluth(at)pro-open(dot)de>
To: Petr Praus <petr(at)praus(dot)net>
Cc: Marcos Ortiz <mlortiz(at)uci(dot)cu>, pgsql-performance(at)postgresql(dot)org, klaussfreire(at)gmail(dot)com, jeff(dot)janes(at)gmail(dot)com
Subject: Re: Re: Increasing work_mem and shared_buffers on Postgres 9.2 significantly slows down queries
Date: 2012-11-06 20:17:59
Message-ID: 50997077.1020500@pro-open.de
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Am 06.11.2012 21:08, schrieb Petr Praus:
>
> 2MB: http://explain.depesz.com/s/ul1
> 4MB: http://explain.depesz.com/s/IlVu
> 10MB: http://explain.depesz.com/s/afx3
> 12MB: http://explain.depesz.com/s/i0vQ
>
See the change in the plan between 10MB and 12MB, directly at top level?
That narrows the thing down quite a bit.

Though I wonder why this didn't show in the original plans...

--
Gunnar "Nick" Bluth
RHCE/SCLA

Mobil +49 172 8853339
Email: gunnar(dot)bluth(at)pro-open(dot)de
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