Sql Tsql Settings

Front 1

Cost Threshold for Parallelism - use for

Back 1

To specify the threshold at which SQL server creates and runs parallel plans for queries. SQL server creates and runs a parallel plan for a query only when the estimated cost to run a serial plan for the same query is higher than the value set for the cost threshold for parallelism

Front 2

cost Threshold for Parallelism - when/what

Back 2

Set on symmetric multiprocessors. used actively when a mix of short and longer queries is run. Short queries run serial plans, longer use parallel plans. The value of the Cost Threshold determines which are considered short.

Front 3

cost threshold for parallelism - when ignored

Back 3

1. your computer has one processor.
2. Only a single CPU is available to SQL server because of the affinity mask config option
3. max degree of parallelism option is set to 1.

Front 4

cost threshold for parallelism - tsql - example

Back 4

is an advanced option, Show Advanced Options command must be set to 1 for sp_configure.
sp_configure 'show advanced options', 1;
GO
reconfigure;
GO
sp_configure 'cost threshold for parallelism', 10;
GO
reconfigure;
GO