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MAXDOP uses different settings?


MAXDOP uses different settings?

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curious_sqldba
curious_sqldba
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I have two servers each have CTP =5 and MAXDOP = 1. I have same query running on these two servers, cost on each of these is less than 5, so technically it should use all available processors,however on one server even though cost is less than 5 it still uses MAXDOP as 0? Screenshots attached.
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MAXDOP_1.jpg (8 views, 61.00 KB)
MAXDOP_0.jpg (8 views, 49.00 KB)
ssismaddy
ssismaddy
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Do you have resource governor enabled?
GilaMonster
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Degree of parallelism 0 doesn't mean it actually ran in parallel, Are you seeing parallel-specific query operators?

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

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curious_sqldba
curious_sqldba
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ssismaddy (9/25/2013)
Do you have resource governor enabled?


nope
curious_sqldba
curious_sqldba
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GilaMonster (9/25/2013)
Degree of parallelism 0 doesn't mean it actually ran in parallel, Are you seeing parallel-specific query operators?


Can i check that from an execution plan?
GilaMonster
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Execution plan is the place you would look to see that.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
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