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From: Marcin Mirosław <marcin@mejor.pl>
To: pgsql-performance@postgresql.org
Subject: Re: : Performance Improvement Strategy
Date: Tue, 20 Sep 2011 19:51:36 +0200
Message-ID: <4E78D2A8.9090709@mejor.pl> (raw)
In-Reply-To: <CAFrxt0j5UysgEU8hQxZ_mGbdex8Ev-bGdGsdpOGYYSO-jO24Fw@mail.gmail.com>
References: <CAFrxt0j5UysgEU8hQxZ_mGbdex8Ev-bGdGsdpOGYYSO-jO24Fw@mail.gmail.com>

W dniu 2011-09-20 18:22, Venkat Balaji pisze:
> Hello Everyone,
> 
> I had  posted  a query in "GENERAL" category, not sure if that was the
> correct category to post.
> 
> Please help me understand how to calculate free space in Tables and
> Indexes even after vacuuming and analyzing is performed.
> 
> What i understand is that, even if we perform VACUUM ANALYZE regularly,
> the free space generated is not filled up.
> 
> I see lot of free spaces or free pages in Tables and Indexes. But, I
> need to give an exact calculation on how much space will be reclaimed
> after VACUUM FULL and RE-INDEXING.
> 
> Is there any standard procedure or process to calculate the same ?

Hello!
I hope this link will be usefull for you :
http://wiki.postgresql.org/wiki/Show_database_bloat
Regards



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