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From: Greg Smith <greg@2ndquadrant.com>
To: Madison Kelly <linux@alteeve.com>
Cc: Steve Crawford <scrawford@pinpointresearch.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: DB is slow until DB is reloaded
Date: Mon, 04 Jan 2010 17:13:55 -0500
Message-ID: <4B426823.4040001@2ndquadrant.com> (raw)
In-Reply-To: <4B42638B.4000103@alteeve.com>
References: <4B423D22.7040803@alteeve.com>
	<4B424215.70605@pinpointresearch.com>
	<4B424FF6.40207@alteeve.com>
	<4B4260E6.7050502@pinpointresearch.com>
	<4B42638B.4000103@alteeve.com>

Madison Kelly wrote:
> I think for now, I will stick with 8.1, but I will certainly try out 
> your repo edit above on a test machine and see how that works out. I 
> am always reticent to change something as fundamental as postgres 
> without "good reason". I guess I am a fan of "if it ain't broke...". :)

PostgreSQL has many fundamental limitations that cannot be resolved no 
matter what you do in 8.1 that are fixed in later versions.  The default 
behavior for the problem you're having has been massively improved by 
updates made in 8.2, 8.3, and 8.4.  8.1 can certainly be considered 
broken in regards to its lack of good and automatic VACUUM and ANALYZE 
behavior, and you're just seeing the first round of issues in that 
area.  Every minute you spend applying temporary fixes to the 
fundamental issues is time you could be better spending toward upgrading 
instead.

-- 
Greg Smith    2ndQuadrant   Baltimore, MD
PostgreSQL Training, Services and Support
greg@2ndQuadrant.com  www.2ndQuadrant.com




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