Monitoring Sql Server
Overview Page
Response Time This shows the full round-trip response time (in milliseconds) of a query representative of general workload (select 1, by default). If required, you can change the query used to determine response time. Use a Spotlight Client to Configure | SQL Server Response Time.
Virtualization Overhead In a virtual environment the physical CPU of a host is shared by virtual machines and the hypervisor. Multiple processes may want to use the physical CPU of the host at the same time.