It would be nice to have something that could suggest settings for the
different *cost* options.
On 18 Jun 2003, matt wrote:
> Are there really any performance settings of much interest beyond the
> shared and non-shared memory settings? Beyond those the interactions
> get so complex that automation is probably impossible anyway, and
> certain options like fsync = false should never be 'recommended'.
>
> On the other hand, a way of empirically deriving some 'correct'
> optimizer parameters for a given machine would be very nice :-)
>
>
> Matt
>
>
> On Wed, 2003-06-18 at 18:07, Tom Lane wrote:
> > Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > > Sure, it would be great if we could do it.
> >
> > If the program actually derives reliable numbers, it would be great.
> > It could easily do more harm than good if it gives bogus results.
> > I think it will be very hard to get reliable rather than bogus results
> > :-( ... but feel free to try.
> >
> > regards, tom lane
> >
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