Postgres 19 beta1 vs sysbench on a small server

This has results from sysbench on a small server with Postgres 19 beta1, 18.4 and 17.10. Sysbench is run with low concurrency (1 thread) and a cached database. The purpose is to search for changes in performance, often from new CPU overheads. tl;dr 19beta1, 18.4 and 17.10 have mostly similar performance There might be small regressions (about 2%) from 17.10 to 19beta1 but my tests are not good at…