Robert Haas írta:
2009/11/9 Laszlo Nagy <gandalf@xxxxxxxxxxxx>:
We have a bigger table with some million rows. Number of index scans is
high, number of seq reads is low. This table if often joined with
others... so we want to buy a new SSD drive, create a tablespace on it
and put this big table on it. Random read speed on SSD is identical to
seq read. However, I need to tell the optimizer that random_page_cost is
less for the new tablespace. Is there a way to do it?
I happen to be working on a patch for this exact feature. However,
even assuming it gets in, that means waiting for 8.5.
That will be a very nice feature. Thank you! :-)
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