On 28.02.2017 17:49, Jeff Janes wrote:
Oh. In my hands, it works very well. I get 70 seconds to do the {age: 20} query from pure cold caches, versus 1.4 seconds from cold caches which was followed by pg_prewarm('docs','prefetch').How much RAM do you have? Maybe you don't have enough to hold the table in RAM. What kind of IO system? And what OS?
On my test system: RAM: 4GB IO: SSD (random_page_cost = 1.0) OS: Ubuntu 16.04 Regards, Sven
