Re: Script to compute randon page cost
От | Hans-Jürgen Schönig |
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Тема | Re: Script to compute randon page cost |
Дата | |
Msg-id | 3D7C58CE.2030002@cybertec.at обсуждение исходный текст |
Ответ на | Re: Script to compute randon page cost ("Christopher Kings-Lynne" <chriskl@familyhealth.com.au>) |
Ответы |
Re: Script to compute randon page cost
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Список | pgsql-hackers |
Christopher Kings-Lynne wrote: >Assuming it's giving out correct information, there seems to be a lot of >evidence for dropping the default random_page_cost to 1... > >Chris > > Some time ago Joe Conway suggest a tool based on a genetic algorithm which tries to find the best parameter settings. As input the user could use a set of SQL statements. The algorithm will try to find those settings which lead to the lowest execution time based on the set of SQL. What about something like that? This way people could tune the database theirselves. Hans -- *Cybertec Geschwinde u Schoenig* Ludo-Hartmannplatz 1/14, A-1160 Vienna, Austria Tel: +43/1/913 68 09; +43/664/233 90 75 www.postgresql.at <http://www.postgresql.at>, cluster.postgresql.at <http://cluster.postgresql.at>, www.cybertec.at <http://www.cybertec.at>, kernel.cybertec.at <http://kernel.cybertec.at>
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