Re: Script to compute randon page cost

From: Brett Schwarz <brett_schwarz(at)yahoo(dot)com>
To: hs(at)cybertec(dot)at
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Script to compute randon page cost
Date: 2002-09-09 16:41:15
Message-ID: 1031589676.11050.101.camel@thor
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On Mon, 2002-09-09 at 01:16, Hans-Jürgen Schönig wrote:
> 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.
>

I actually had starting coding a tool like this, but have become
distracted with other things. I plan on continuing with it maybe next
week. If anyone has suggestions, please let me know...

--brett

--
Brett Schwarz
brett_schwarz AT yahoo.com

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Vince Vielhaber 2002-09-09 16:49:53 Re: Map of developers
Previous Message Joe Conway 2002-09-09 16:33:23 Re: bug?