CPU-bound sysbench on a large server: Postgres 12 to 19 beta1

130 · Smalldatum Blogspot · June 20, 2026, 12:19 a.m.
Summary
This blog post presents performance benchmark results from sysbench tests on PostgreSQL versions 12 to 19 beta1. Key findings highlight no significant regressions in performance across versions, with notable improvements in query throughput for read-only and write-heavy operations, especially in version 19 beta1 due to enhanced query planning. Detailed comparisons and benchmarks, involving a 48-core server setup, confirm substantial performance improvements, although some regressions were noted across certain range query tests between versions 12 and 19.