Automatic tuning of postgresql.conf parameters?

From: Mattias Kregert
Subject: Automatic tuning of postgresql.conf parameters?
Date: ,
Msg-id: 00b201c653da$a4409670$09000a0a@kregert.se
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List: pgsql-performance

I have noticed that a lot of people have a hard time finding out how to tune postgresql to suit their hardware.
 
Are there any tools for automatic tuning of the parameters in postgresql.conf? A simple program running some benchmarks on cpu & disk speed, checking the amount of ram and so on and then suggesting random/seq access cost, vacuum cust, sortmem/cache settings and so on? A pg_tune utility?
 
Maybe it could even look at runtime statistics/usage logs and help set the number of shared buffers, chekpoints, autovacuum...?
 
/Mattias (using the default config)
 

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