Number of Processors(SQL Query)

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Number of Processors(SQL Query)

Waseem Jaleel

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Points: 1706
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July 27, 2008 at 8:32 pm

#123376

Please help me if there is any method to retreive using query, the number of processors in a server on which sql server is installled

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Gail Shaw SSC Guru Points: 1004504 More actions · Answer 1

Yes, there is. You can use the xp_msver extended procedure. I'm not sure of the security requirements

exec xp_msver 'ProcessorCount'

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

zNick SSC Eights! Points: 842 More actions · Answer 2

/* well, this will work, though it is a little elaborate. it does however provide some other cool info about the processer(s)*/

DECLARE

@nProcessorCountINT

,@vcProcessorModelVARCHAR(5)

,@vcProcessorTypeVARCHAR(30)

,@vcProcessorNameStringVARCHAR(60)

CREATE TABLE #tblStats

(

[Index] INT,

[Name] VARCHAR(200),

Internal_Value VARCHAR(50),

Character_Value VARCHAR(200)

)

INSERT INTO #tblStats

EXEC master.dbo.xp_msver 'ProcessorCount'

INSERT INTO #tblStats

EXEC master.dbo.xp_msver 'ProcessorType'

INSERT INTO #tblStats

EXEC master.dbo.xp_msver 'ProcessorType'

SELECT @nProcessorCount = Internal_Value FROM #tblStats WHERE [Index] = 16

SELECT @vcProcessorModel = Internal_Value FROM #tblStats WHERE [Index] = 18

SELECT @vcProcessorType = Character_Value FROM #tblStats WHERE [Index] = 18

EXEC master.dbo.xp_instance_regreadN'HKEY_LOCAL_MACHINE',

N'HARDWARE\DESCRIPTION\System\CentralProcessor\0',

N'ProcessorNameString',

@vcProcessorNameString OUTPUT,

N'no_output'

SELECT

@nProcessorCount

,@vcProcessorModel

,@vcProcessorType

,@vcProcessorNameString

DROP TABLE #tblStats

-- let me know if you have any issues

2 Tim 3:16 SSCarpal Tunnel Points: 4541 More actions · Answer 3

Since MS licenses on actual CPU (and not cores) I needed to find out the actual cpu for our servers. Our sysadmin provided me an executable (attached) that is exactly what I needed. Change the .txt to .exe and you're good-to-go.

Tim White

2 Tim 3:16 SSCarpal Tunnel Points: 4541 More actions · Answer 4

You can also download this code at http://softwarecommunity.intel.com/articles/eng/2728.htm

Tim White

Waseem Jaleel SSCommitted Points: 1706 More actions · Answer 5

I thank all of you for all the responses, this has been very useful to me, I have finally decided to use the xp_msver, by Gail Shaw. Thank you very much once again.

2 Tim 3:16 SSCarpal Tunnel Points: 4541 More actions · Answer 6

Just want to make sure you understand that this is a "core" count and not a true cpu count.

Tim White

Waseem Jaleel SSCommitted Points: 1706 More actions · Answer 7

I understand that it gives the number of cores and not the actual number of physical processors, I believe this is the only option available as I did not see any suggestion which would give the number of physical processors, other than a manual check. I required this as a sql query since i need to run this from a central server on a larger number of servers added as linked servers to the central server. Your replies are enough for me to work on this requirement. Thanks a lot all of you!!

GabyYYZ SSCertifiable Points: 7913 More actions · Answer 8

Try this, it's something I wrote to automate a program that could be optimized on number of processors used:

create procedure num_processors

as

set nocount on

declare @numprocs int

create table #numprocs

(

id int,

colname varchar(128),

IV int,

CV varchar(128)

)

insert #numprocs

exec master..xp_msver

select @numprocs = IV from #numprocs

where colname like '%ProcessorCount%'

drop table #numprocs

return @numprocs

go

Hope it helps. It gets the actual internal processor representation from SQL Server so hopefully it is accurate.

Gaby________________________________________________________________"In theory, theory and practice are the same. In practice, they are not." - Albert Einstein

Orlando Colamatteo SSC Guru Points: 182279 More actions · Answer 9

Waseem Jaleel (7/28/2008)
I thank all of you for all the responses, this has been very useful to me, I have finally decided to use the xp_msver, by Gail Shaw. Thank you very much once again.

I know this is a really old thread but I found it through Google looking for something else so I am confident others will too. xp_msver does not show physical CPU sockets, it shows logical processors.

This will show you the number of physical sockets on your server:

SELECT cpu_count / hyperthread_ratio AS physical_cpu_sockets

FROM sys.dm_os_sys_info ;

Credit: http://sqlblog.com/blogs/kalen_delaney/archive/2007/12/08/hyperthreaded-or-not.aspx

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