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 TempDB Placement - One File Per CPU???

Author  Topic 

DBADave
Constraint Violating Yak Guru

366 Posts

Posted - 2006-09-08 : 20:14:42
I need some help understanding the benefit of creating tempdb with one file per processor. I believe the benefit has something to do with the way SQL Server utilizes processor threads, but I'm a bit weak on the details.

Thanks, Dave

Kristen
Test

22859 Posts

Posted - 2006-09-09 : 04:53:34
Don't know the answer, but I remember reading somewhere that the multiple files must be carefully constructed - exactly the same size and an exact multiple of the number of CPUs, or somesuch.

Just in case that helps your Googling!

Kristen
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DBADave
Constraint Violating Yak Guru

366 Posts

Posted - 2006-09-10 : 20:18:02
Here are two links discussing the proposed configuration. The explanation is a bit over my head so I need to do some research. I'm also curious if this only applies when tempdb is over 5GB as indicated in the second link. If you open the links search for "round robin".

http://download.microsoft.com/download/4/f/8/4f8f2dc9-a9a7-4b68-98cb-163482c95e0b/WorkingWithTempDB.doc

http://support.microsoft.com/kb/328551/en-us

Thanks, Dave
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