Re: Plan time Improvement - 64bit bitmapset - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Plan time Improvement - 64bit bitmapset
Date
Msg-id 4A2FF000.5070304@anarazel.de
Whole thread Raw
In response to Re: Plan time Improvement - 64bit bitmapset  ("Kevin Grittner" <Kevin.Grittner@wicourts.gov>)
List pgsql-hackers
Hi,

On 06/10/2009 06:01 PM, Kevin Grittner wrote:
> Andres Freund<andres@anarazel.de>  wrote:
>> - Sometimes adding a single join more/less dropped the planning time
>> to a fraction - strange.
>> - The same with changing {join,from}_collapse_limit - sometimes
>> changing it yields plan times different by orders of magnitudes in
>> both directions.
> That seems like the place to spend the time looking, rather than
> nibbling away at the run times by a few percent after letting them
> jump by orders of magnitude.
Yes. I noticed this while looking for reasons. And I will continue to do 
so...

Andres


pgsql-hackers by date:

Previous
From: Ana Carolina Brito de Almeida
Date:
Subject: PlannerInfo Structure
Next
From: Tom Lane
Date:
Subject: Resolving 8.4 open items