Understanding the Page Resource Cracker

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.

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