Write-heavy sysbench tests, a large server, modern Postgres and MySQL

218 · Smalldatum Blogspot · June 12, 2026, 1:16 a.m.
Summary
This blog post presents benchmark results comparing write-heavy performance between PostgreSQL and MySQL, indicating that PostgreSQL encounters significant throughput variation across several versions, while MySQL generally provides more stable performance. The author also discusses the specific configurations and setups used for the tests, highlighting notable regressions observed in the newer PostgreSQL versions as compared to the baseline from version 15.17.