Re: Fuzzy cost comparison to eliminate redundant planning

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От
Joe Conway
Тема
Re: Fuzzy cost comparison to eliminate redundant planning
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4067B8DC.8070205@joeconway.com
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Fuzzy cost comparison to eliminate redundant planning work Tom Lane <tgl@sss.pgh.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning Bruce Momjian <pgman@candle.pha.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning work Tom Lane <tgl@sss.pgh.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning Bruce Momjian <pgman@candle.pha.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning Tom Lane <tgl@sss.pgh.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning Bruce Momjian <pgman@candle.pha.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning Tom Lane <tgl@sss.pgh.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning Mike Mascari <mascarm@mascari.com>
Re: Fuzzy cost comparison to eliminate redundant planning work Tom Lane <tgl@sss.pgh.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning Joe Conway <mail@joeconway.com>
Re: Fuzzy cost comparison to eliminate redundant planning work Tom Lane <tgl@sss.pgh.pa.us>
Re: Fuzzy cost comparison to eliminate redundant planning Neil Conway <neilc@samurai.com>
Re: Fuzzy cost comparison to eliminate redundant planning Joe Conway <mail@joeconway.com>
Neil Conway wrote:
> On 28-Mar-04, at 8:32 PM, Joe Conway wrote:
>> > +      * 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?

I think so. For one thing, if it were user-controllable, then it could 
be turned off for backward compatible behavior (i.e. 0 means no fuzz).

Joe


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