Tom Lane wrote:

Jan Wieck <[EMAIL PROTECTED]> 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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