From: Guillaume Lelarge <guillaume@lelarge.info>
To: Patric de Waha <lists@p-dw.com>
Cc: Joshua D. Drake <jd@commandprompt.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Vacuum full considered useful ;)
Date: Sat, 14 Jul 2007 18:34:18 +0200
Message-ID: <4698FB0A.4070502@lelarge.info> (raw)
In-Reply-To: <4698F8EE.8090603@commandprompt.com>
References: <4698F0CF.7000602@p-dw.com>
<4698F8EE.8090603@commandprompt.com>
Joshua D. Drake a écrit :
>
>> No wonder, I got IO problems with such a fragmentation.
>>
>> For people not very familiar with postgres especially those coming
>> from mysql,
>> i'd recommend paying attention to this.
>
> Definitely. The problem here is that you just aren't vacuuming enough,
> not that you didn't vacuum full. I would suggest reviewing autovacuum
> and seeing if that will help you.
>
And paying attention to the max_fsm_pages setting. A value too low won't
help vacuum's work.
Regards.
--
Guillaume.
http://www.postgresqlfr.orghttp://docs.postgresqlfr.org
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To: pgsql-performance@postgresql.org
Cc: guillaume@lelarge.info, lists@p-dw.com, jd@commandprompt.com
Subject: Re: Vacuum full considered useful ;)
In-Reply-To: <4698FB0A.4070502@lelarge.info>
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