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From: Andrus <kobruleht2@hot.ee>
To: Scott Carey <scott@richrelevance.com>
To: Scott Marlowe <scott.marlowe@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Increasing GROUP BY CHAR columns speed
Date: Fri, 28 Nov 2008 21:57:43 +0200
Message-ID: <8553B7AAE7294B4BAB18B759978ECD24@andrusnotebook> (raw)
In-Reply-To: <BDFBB77C9E07BE4A984DAAE981D19F961ACA17D9CE@EXVMBX018-1.exch018.msoutlookonline.net>
References: <ggp1au$1iq2$1@news.hub.org>
	<BDFBB77C9E07BE4A984DAAE981D19F961ACA17D9C9@EXVMBX018-1.exch018.msoutlookonline.net>
	<3E5CE5640FFD4172956D223988D8D578@andrusnotebook>
	<dcc563d10811281024l4cc3a063r4f17ba8337b1ee36@mail.gmail.com>
	<BDFBB77C9E07BE4A984DAAE981D19F961ACA17D9CE@EXVMBX018-1.exch018.msoutlookonline.net>

Application should work with any server starting at 8.1 with any RAM size 
(probably starting at 1 GB).

How to find safe value which does not cause error in SET work_mem command ?

If I use 2 GB maybe this can cause excaption when running in server with 1 
GB RAM where this setting may be not allowed.

Andrus. 




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