SELECT * FROM sys.sysprocesses WHERE DB_NAME(dbid)='TEST'; --TEST数据库的进程数
SELECT cpu_count,scheduler_count FROM sys.dm_os_sys_info; --CPU和SCHEDULER数量
SELECT max_workers_count FROM sys.dm_os_sys_info; --最大工作线程数
--CPU占比高的10条SQL语句
SELECT TOP 10 dest.text AS 'sql语句' FROM sys.dm_exec_requests AS der
CROSS APPLY
sys.dm_exec_sql_text(der.[sql_handle]) AS dest
WHERE [session_id]>50 ORDER BY [cpu_time] DESC
--查看当前排队正在执行的语句
SELECT TOP 10 session_id,request_id,start_time AS '开始时间',status AS '状态',
command AS '命令',dest.text AS 'sql语句', DB_NAME(database_id) AS '数据库名',
blocking_session_id AS '正在阻塞其他会话的会话ID',der.wait_type AS '等待资源类型',
wait_time AS '等待时间',wait_resource AS '等待的资源',dows.waiting_tasks_count AS '当前正在进行等待的任务数',
reads AS '物理读次数',writes AS '写次数',logical_reads AS '逻辑读次数',row_count AS '返回结果行数'
FROM sys.dm_exec_requests AS der
INNER JOIN
sys.dm_os_wait_stats AS dows
ON der.wait_type=dows.wait_type
CROSS APPLY
sys.dm_exec_sql_text(der.sql_handle) AS dest
WHERE session_id>50
ORDER BY cpu_time DESC
--查看TEST数据库下面是否有阻塞，前10个最耗CPU时间的会话
SELECT TOP 10 session_id,request_id,start_time AS '开始时间',status AS '状态',
command AS '命令',dest.text AS 'sql语句',DB_NAME([database_id]) AS '数据库名',
blocking_session_id AS '正在阻塞其他会话的会话ID',wait_type AS '等待资源类型',
wait_time AS '等待时间',wait_resource AS '等待的资源',reads AS '物理读次数',writes AS '写次数',
logical_reads AS '逻辑读次数',row_count AS '返回结果行数'
FROM sys.[dm_exec_requests] AS der
CROSS APPLY
sys.dm_exec_sql_text(der.sql_handle) AS dest
WHERE session_id>50 AND DB_NAME(der.database_id)='TEST'
ORDER BY cpu_time DESC保存処理の性能は、（降順に従って、加工/回）を行います
SELECT TOP 100 name, last_execution_time, execution_count, total_elapsed_time, last_worker_time,
D.total_elapsed_time/D.execution_count, *
FROM SYS.procedures S JOIN SYS.dm_exec_procedure_stats D
ON S.object_id=D.object_id
--where name like 'pr_t_im_flow_pt%'
--where execution_count >= 100
ORDER BY D.total_elapsed_time/D.execution_count DESC
