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When you use Microsoft SQL Server 2014, you may encounter the following issue that is related in SQL Server 2014 Release Notes:

Procedure and query execution statistics for natively compiled stored procedures record worker time in multiples of 1000
Issue: After you enable the collection of procedure or query execution statistics collection for natively compiled stored procedures using sp_xtp_control_proc_exec_stats or sp_xtp_control_query_exec_stats, you see the *_worker_time reported in multiples of 1000, in the DMVs sys.dm_exec_procedure_stats and sys.dm_exec_query_stats. Query executions that have a worker time of less than 500 microseconds will be reported as having a worker_time of 0.


The issue occurs because the API that is used to view the CPU time has a precision up to milliseconds only and it cannot be used to view CPU time in microsecond precision.

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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