Update configure-the-cost-threshold-for-parallelism-server-configuration-option.md

Author: pmasl

docs/database-engine/configure-windows/configure-the-cost-threshold-for-parallelism-server-configuration-option.md

@@ -56,7 +56,7 @@ manager: craigg
 
  A logical processor is the basic unit of processor hardware that allows the operating system to dispatch a task or execute a thread context. Each logical processor can execute only one thread context at a time. The processor core is the circuitry that provides ability to decode and execute instructions. A processor core may contain one or more logical processors. The following [!INCLUDE[tsql](../../includes/tsql-md.md)] query can be used for obtaining CPU information for the system.  
 
-```  
+```sql  
 SELECT (cpu_count / hyperthread_ratio) AS PhysicalCPUs,   
 cpu_count AS logicalCPUs   
 FROM sys.dm_os_sys_info  
@@ -66,7 +66,7 @@ FROM sys.dm_os_sys_info
 
 -   This option is an advanced option and should be changed only by an experienced database administrator or certified [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] professional.  
 
--   In certain cases, a parallel plan may be chosen even though the query's cost plan is less than the current **cost threshold for parallelism** value. This can happen because the decision to use a parallel or serial plan is based on a cost estimate provided before the full optimization is complete.  
+-   In certain cases, a parallel plan may be chosen even though the query's cost plan is less than the current **cost threshold for parallelism** value. This can happen because the decision to use a parallel or serial plan is based on a cost estimate provided earlier in the optimization process. For more information, refer to the [Query Processing Architecture Guide](../../relational-databases/query-processing-architecture-guide.md#parallel-query-processing).  
 
 -   While the default value of 5 is adequate for most systems, a different value may be appropriate. Perform application testing with higher and lower values if needed to optimize application performance.