John Morehouse looks at the new sys.fn_PageResCracker() function in SQL Server 2019:
In a previous blog post, I discussed two new methods in SQL Server 2019 to determine exactly which page a request might be waiting for when there is contention. One of these new methods involves a new function, fn_pagerescracker. Naturally, I wanted to see how this function operates. Let’s look at the Master database to investigate how it works!
Click through for the function definition and what it all means.