Hello hackers!
I suddenly found commit ac1d794 gives up to 3 times performance degradation.
I tried to run pgbench -s 1000 -j 48 -c 48 -S -M prepared on 70 CPU-core machine:
commit ac1d794 gives me 363,474 tps
and previous commit a05dc4d gives me 956,146
and master( 3d0c50f ) with revert ac1d794 gives me 969,265
it's shocking