Linux kernel provides a wide range of configuration options that can affect performance. It’s all about getting the right configuration for your application and workload. Just like any other database, PostgreSQL relies on the Linux kernel to be optimally configured. Poorly configured parameters can result in poor performance. Therefore, it is important that you benchmark [&]

https://www.percona.com/blog/2018/12/20/benchmark-postgresql-with-linux-hugepages/