Parallelism

SQL Server 2025 is out at last and we are continuing our journey into some of the new features this version brings.

The latest version of SQL Server continues to evolve some of the features we first saw in SQL 2022 and one of those features is ‘DOP Feedback’…

Some of the defaults in earlier versions of SQL Server are less than ideal, particularly Cost Threshold For Parallelism (CTFP) and Max Degree Of Parallelism (MAXDOP).

Sure, things have improved in later versions. For example, since SQL Server 2019 the installer now prompts you to change MAXDOP. However, its still a problem for many workloads…