Re: [HACKERS] Some notes on optimizer cost estimates
| От | Peter Eisentraut |
|---|---|
| Тема | Re: [HACKERS] Some notes on optimizer cost estimates |
| Дата | |
| Msg-id | Pine.LNX.4.21.0001250051290.525-100000@localhost.localdomain обсуждение исходный текст |
| Ответ на | Re: [HACKERS] Some notes on optimizer cost estimates ("Henry B. Hotz" <hotz@jpl.nasa.gov>) |
| Ответы |
Re: [HACKERS] Some notes on optimizer cost estimates
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| Список | pgsql-hackers |
On 2000-01-24, Henry B. Hotz mentioned: > >to be useful for cost estimating. We could make it a parameter like > >we do for CPU_PAGE_WEIGHT ... but you know and I know that no one > >ever bothers to adjust those numbers in the field ... > Couldn't we test some of these parameters inside configure and set them there? Nope. configure is for testing the build environment, not the runtime environment. But the same thing could be achieved with some runtime-analyzing program that writes its results into some sort of configuration file. -- Peter Eisentraut Sernanders väg 10:115 peter_e@gmx.net 75262 Uppsala http://yi.org/peter-e/ Sweden
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