From: Laszlo Nagy <gandalf@shopzeus.com>
To: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Big index sizes
Date: Tue, 30 Dec 2008 10:05:59 +0100
Message-ID: <4959E477.9050700@shopzeus.com> (raw)
We have serveral table where the index size is much bigger than the
table size.
Example:
select count(*) from product_price -- 2234244
Table size: 400 MB
Index size: 600 MB
After executing "reindex table product_price", index size reduced to 269MB.
I believe this affects performance.
Vacuuming a table does not rebuild the indexes, am I right? I'm not sure
if I need to do this manually, or is this the result of another problem?
(For example, too many open transactions, frequent updates?)
Thanks
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To: pgsql-performance@postgresql.org
Cc: gandalf@shopzeus.com
Subject: Re: Big index sizes
In-Reply-To: <4959E477.9050700@shopzeus.com>
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