Queries barely over the Cost Threshold for Parallelism

Posted by jchang on SQL Blog See other posts from SQL Blog or by jchang
Published on Thu, 15 Nov 2012 20:11:00 GMT Indexed on 2012/11/15 23:17 UTC
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Previously I had discussed SQL Server parallelism, with my thoughts on the best settings for: Cost Threshold for Parallelism (CTP) and Max Degrees of Parallelism (MAXDOP) in Parallelism Strategy and Comments . At the time, I had intended to follow up with detailed measurements. So now a mere 2 years later, here it is. The general thought was that CTP should be raised from the default value of 5, and MAXDOP should be changed from unrestricted, on modern systems with very many cores, and most especially...(read more)

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