On Thu, Feb 1, 2024 at 11:56 AM Michael Paquier <mich...@paquier.xyz> wrote: > > On Thu, Feb 01, 2024 at 11:43:07AM +0800, Junwang Zhao wrote: > > The first 6 rounds are like 10% better than the later 9 rounds, is this > > normal? > > Even with HEAD? Perhaps you have some OS cache eviction in play here? > FWIW, I'm not seeing any of that with longer runs after 7~ tries in a > loop of 15.
Yeah, with HEAD. I'm on ubuntu 22.04, I did not change any gucs, maybe I should set a higher shared_buffers? But I dought that's related ;( > -- > Michael -- Regards Junwang Zhao
