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Re: Fuzzy cost comparison to eliminate redundant planning

From: Neil Conway <neilc(at)samurai(dot)com>
To: Joe Conway <mail(at)joeconway(dot)com>
Cc: pgsql-hackers(at)postgreSQL(dot)org, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Subject: Re: Fuzzy cost comparison to eliminate redundant planning
Date: 2004-03-29 02:03:01
Message-ID: 35642890-8125-11D8-8DF2-000A95AB279E@samurai.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On 28-Mar-04, at 8:32 PM, Joe Conway wrote:
> It looks like a great idea to me...
>
> > + 	 * XXX does this percentage need to be user-configurable?
>
> ...but I think the answer to the above is yes.

Is this really a parameter that we can expect administrators to be able 
to understand and tune very effectively?

-Neil


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