> -----Original Message----- > From: Nathan Bossart <nathandboss...@gmail.com> > Sent: Monday, March 18, 2024 9:20 AM > ... > I don't think David was suggesting that we need to remove the runtime checks > for AVX512. IIUC he was pointing out that most of the performance gain is > from removing the function call overhead, which your v8-0002 patch already > does for the proposed AVX512 code. We can apply a similar optimization for > systems without AVX512 by inlining the code for > pg_popcount64() and pg_popcount32().
Ok, got you. Question: I applied the patch for the drive_popcount* functions and rebuilt. The resultant server complains that the function is missing. What is the trick to make this work? Another Question: Is there a reason "time psql" is used over the Postgres "\timing" command? Thanks, Paul
