Hi Tom, > What did you test exactly?
Tested 3 benchmark configurations on an m6g.16xlarge (Graviton2, 64 cpus, 256GB RAM) I set the scale factor to consume about 1/3 of 256GB and the other parameters in the next line. pgbench setup: -F 90 -s 5622 -c 256 Pgbench select-only w/ patch 662804 tps (-0.5%) w/o patch 666354 tps. tcpb-like w/ patch 35844 tps (0%) w/o patch 35835 tps We also test with Hammerdb when evaluating patches, it shows the patch gets +3%: Hammerdb (192 Warehouse 256 clients) w/ patch 1147463 NOPM (+3%) w/o patch 1112908 NOPM I've run pgbench more than once and the measured TPS values overlap, even though the means on select-only show a small degradation at the moment I am concluding it is noise. On Hammerdb, the results show a measurable difference. Thanks, Geoff