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Before adjusting MAXDOP, review your indexes and statistics for accuracy and make sure there are no other underlying issues. If you choose to adjust MAXDOP, recommended settings include 4, 2, or 1. For a NUMA system, use the number of cores available in a single NUMA node. You may want to make these updates on the single query instead of the entire instance to avoid any additional problems.

SQL Diagnostic Manager identifies and resolves SQL Server performance problems before they happen. Learn more > >