Not All Defaults Are Good

Nate Johnson rails against bad defaults in SQL Server:

Your servers have many-core CPUs, right?  And you want SQL to utilize those cores to the best of its ability, distributing the many users’ workloads fairly amongst them, yes?  Damn right, you paid $3k or more per core in freaking licensing costs!  “OK”, says SQL Server, “I’ll use all available CPUs for any query with a ‘cost’ over ‘5’“.  (To give context here, in case you’re not aware, ‘5’ is a LOW number; most OLTP workload queries are in the double to triple digits).  “But wait!”, you protest, “I have more than 1 user, obviously, and I don’t want their horrible queries bringing all CPUs to their knees and forcing the 50 other user queries to wait their turn!”

Nate has a few recommendations here, as well as a picture of kittens.

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