Today, I received email from one of my blog follower asking if there is any DMV or SQL script, which he can use to find the following information about the processors that are available to and consumed by SQL Server:

• Total number of physical CPUs
• Total number of physical cores per CPUs
• Total number of physical cores
• Total number of virtual CPUs
• Processor type (x86 or x64)

As a result of this question, I wrote the following script using sys.dm_os_sys_info and xp_msver, which returns the required information:

DECLARE @xp_msver TABLE (
[idx] [int] NULL
,[c_name] [varchar](100) NULL
,[int_val] [float] NULL
,[c_val] [varchar](128) NULL
)

INSERT INTO @xp_msver
EXEC ('[master]..[xp_msver]');;

WITH [ProcessorInfo]
AS (
SELECT ([cpu_count] / [hyperthread_ratio]) AS [number_of_physical_cpus]
,CASE 
WHEN hyperthread_ratio = cpu_count
THEN cpu_count
ELSE (([cpu_count] - [hyperthread_ratio]) / ([cpu_count] / [hyperthread_ratio]))
END AS [number_of_cores_per_cpu]
,CASE 
WHEN hyperthread_ratio = cpu_count
THEN cpu_count
ELSE ([cpu_count] / [hyperthread_ratio]) * (([cpu_count] - [hyperthread_ratio]) / ([cpu_count] / [hyperthread_ratio]))
END AS [total_number_of_cores]
,[cpu_count] AS [number_of_virtual_cpus]
,(
SELECT [c_val]
FROM @xp_msver
WHERE [c_name] = 'Platform'
) AS [cpu_category]
FROM [sys].[dm_os_sys_info]
)
SELECT [number_of_physical_cpus]
,[number_of_cores_per_cpu]
,[total_number_of_cores]
,[number_of_virtual_cpus]
,LTRIM(RIGHT([cpu_category], CHARINDEX('x', [cpu_category]) - 1)) AS [cpu_category]
FROM [ProcessorInfo]

The code of this script is tested on SQL Server 2005 and above versions.

Hope you will this post useful 😉 .