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