Hi, On August 15, 2025 3:25:50 PM EDT, Peter Geoghegan <p...@bowt.ie> wrote: >On Thu, Aug 14, 2025 at 10:12 PM Peter Geoghegan <p...@bowt.ie> wrote: >> As far as I know, we only have the following unambiguous performance >> regressions (that clearly need to be fixed): >> >> 1. This issue. >> >> 2. There's about a 3% loss of throughput on pgbench SELECT. > >I did a quick pgbench SELECT benchmark again with Andres' patch, just >to see if that has been impacted. Now the regression there is much >larger; it goes from a ~3% regression to a ~14% regression. > >I'm not worried about it. Andres' "not waiting for already-in-progress >IO" patch was clearly just a prototype. Just thought it was worth >noting here.
Are you confident in that? Because the patch should be extremely cheap in that case. What precisely were you testing? Andres -- Sent from my Android device with K-9 Mail. Please excuse my brevity.