The insert benchmark on a small server, cached workload : Postgres 19 beta1

This has results for Postgres versions 19 beta1, 18.4 and 17.10 with the Insert Benchmark on a small server using a cached and CPU-bound workload. Postgres continues to be boring in a good way. It is hard to find performance regressions. tl;dr I don't see regressions here in 19 beta1 I see some improvements here in 19 beta1 index create (l.x) is faster but the step is short-running so I don't…