PostgreSQL: performance descrease due to index bloatper

Posted by Henry-Nicolas Tourneur on Server Fault See other posts from Server Fault or by Henry-Nicolas Tourneur
Published on 2012-03-19T09:24:15Z Indexed on 2012/03/19 10:07 UTC
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Performance

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postgresql

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index

I'm running a PgSQL 8.1 on a CentOS 4.4 system (not upgradable unfortunately).
There's a Java app running on top of the PgSQL daemon and we got to reindex the database every 2 months or so. Also important: the database isn't growing.

It looks like the bloat is now coming faster than before and this tends to increase.
My config is available here, autovacuum daemon is enabled and running quite often: pastebin.com/RytNj7dK

You can also find the output of this query wiki.postgresql.org/wiki/Show_database_bloat

3 hours after running reindex: http://pastebin.com/raw.php?i=75fybKyd
72 hours after running reindex: http://pastebin.com/raw.php?i=89VKd7PC

Does anyone have any idea what should I tweak to get rid of that growing bloat?

Thanks for your help

PS: due to antispam prevention system, I had to remove the first 2 http:// prefixes for my two first links.

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