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

This has results for modern Postgres and MySQL using write-heavy tests from sysbench and a large server. I think there are regressions in Postgres that arrive in some of versions 16, 17, 18 and 19 beta1 but I am far from certain and this blog post is just another step in my journey to figure that out. tl;dr Postgres suffers a lot from throughput variation while MySQL+InnoDB does not InnoDB gets…