FIX: High CPU usage after you reduce the value of the CAP_CPU_PERCENT argument in creating a resource pool

Applies to: SQL Server 2014 DeveloperSQL Server 2014 DeveloperSQL Server 2014 Enterprise

Symptoms


Consider the following scenario:
  • You use Resource Governor in Microsoft SQL Server 2014.
  • You create a resource pool by specifying the CAP_CPU_PERCENT argument with a value that's much less than the default value. For example, the default value is 100, and you specify a value of 20. 
  • You create a workload group that uses the given resource pool.
  • You connect to the instance of SQL Server, and the connection is classified to consume the given workload group.
  • You run queries through the connection.
In this scenario, the CPU usage is higher than expected, and you experience decreased performance when SQL Server process queries.

Status


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