Hi,
>> But is there a tool that could compile a summary out of the log? The
>> log grows awefully big after a short time.
There's also pg_analyzer to check out.
http://www.samse.fr/GPL/pg_analyzer/
Some of it's features are: written in Perl and produces HTML output.
> You might want to look at the "Practical Query Analyser" - haven't used
> it myself yet, but it seems a sensible idea.
>
> http://pqa.projects.postgresql.org/
Cheers,
Rudi.