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From: Markus Schaber <schabi@logix-tt.com>
To: pgsql-performance@postgresql.org
Cc: me@alternize.com
Subject: Re: new to postgres (and db management) and performance
Date: Tue, 17 Jan 2006 14:33:41 +0100
Message-ID: <43CCF235.1080009@logix-tt.com> (raw)
In-Reply-To: <22960.1137460135@sss.pgh.pa.us>
References: <43CC1938.7020807@gmail.com>
	<18875.1137451410@sss.pgh.pa.us>
	<070501c61aee$ed450560$6402a8c0@iwing>
	<22960.1137460135@sss.pgh.pa.us>

Hi, Tom,

Tom Lane wrote:

>>in our db system (for a website), i notice performance boosts after a vacuum 
>>full. but then, a VACUUM FULL takes 50min+ during which the db is not really 
>>accessible to web-users. is there another way to perform maintenance tasks 
>>AND leaving the db fully operable and accessible?
> 
> You're not doing regular vacuums often enough.

It may also help to increase the max_fsm_pages setting, so postmaster
has more memory to remember freed pages between VACUUMs.

HTH,
Markus

-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org



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