Merge pull request #10171 from bluefooted/dm-os-schedulers

Adding missing columns to sys.dm_os_schedulers

Author: PRMerger15

docs/relational-databases/system-dynamic-management-views/sys-dm-os-schedulers-transact-sql.md

@@ -56,6 +56,10 @@ monikerRange: ">=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-s
 |memory_object_address|**varbinary(8)**|Memory address of the scheduler memory object. Not NULLABLE.|  
 |task_memory_object_address|**varbinary(8)**|Memory address of the task memory object. Is not nullable. For more information, see [sys.dm_os_memory_objects (Transact-SQL)](../../relational-databases/system-dynamic-management-views/sys-dm-os-memory-objects-transact-sql.md).|  
 |quantum_length_us|**bigint**|[!INCLUDE[ssInternalOnly](../../includes/ssinternalonly-md.md)] Exposes the scheduler quantum used by SQLOS.|  
+| total_cpu_usage_ms |**bigint**|**Applies to**: [!INCLUDE[ssSQL15](../../includes/sssql15-md.md)] and later <br><br> Total CPU consumed by this scheduler as reported by non-preemptive workers. Is not nullable.|
+|total_cpu_idle_capped_ms|**bigint**|[!INCLUDE[ssInternalOnly](../../includes/ssinternalonly-md.md)] Indicates throttling based on [Service Level Objective](/azure/sql-data-warehouse/what-is-a-data-warehouse-unit-dwu-cdwu#service-level-objective), will always be 0 for non-Azure versions of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)]. Is nullable.|
+|total_scheduler_delay_ms|**bigint**|**Applies to**: [!INCLUDE[ssSQL15](../../includes/sssql15-md.md)] and later <br><br> The time between one worker switching out and another one switching in. Can be caused by preemptive workers delaying the scheduling of the next non-preemptive worker, or due to the OS scheduling threads from other processes. Is not nullable.|
+|ideal_workers_limit|**int**|**Applies to**: [!INCLUDE[sql-server-2019](../../includes/sssqlv15-md.md)] and later <br><br> How many workers should ideally be on the scheduler. If the current workers exceed the limit due to imbalanced task load, once they become idle they will be trimmed. Is not nullable.|
 |pdw_node_id|**int**|**Applies to**: [!INCLUDE[ssSDWfull](../../includes/sssdwfull-md.md)], [!INCLUDE[ssPDW](../../includes/sspdw-md.md)]<br /><br /> The identifier for the node that this distribution is on.|  
 
 ## Permissions