Shridhar Daithankar <[EMAIL PROTECTED]> writes:
> Also if you have fast disk drives, you can reduce random page cost to 2 or 1.5.

Note however that most of the people who have found smaller
random_page_cost to be helpful are in situations where most of their
data fits in RAM.  Reducing the cost towards 1 simply reflects the fact
that there's no sequential-fetch advantage when grabbing data that's
already in RAM.

When benchmarking with data sets considerably larger than available
buffer cache, I rather doubt that small random_page_cost would be a good
idea.  Still, you might as well experiment to see.

                        regards, tom lane

---------------------------(end of broadcast)---------------------------
TIP 3: if posting/reading through Usenet, please send an appropriate
      subscribe-nomail command to [EMAIL PROTECTED] so that your
      message can get through to the mailing list cleanly

Reply via email to