Tom Lane wrote:
> Jan Wieck <JanWieck@Yahoo.com> writes:
>> However, I have not seen much evidence yet that the vacuum delay alone
>> does that much.
>
> Gaetano and a couple of other people did experiments that seemed to show
> it was useful. I think we'd want to change the shape of the knob per
> later suggestions (sleep 10 ms every N blocks, instead of N ms every
> block) but it did seem that there was useful bang for little buck there.
I thought it was "sleep N ms every M blocks".
Have we seen any numbers? Anything at all? Something that gives us a
clue by what factor one has to multiply the total time a "VACUUM
ANALYZE" takes, to get what effect in return?
Jan
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