查询IO的几个存储过程

 -- =============================================-- Author:  ZHAOWENZHONG-- Create date: 2009-05-17-- Description: 查询某个会话IO-- =============================================CREATE PROCEDURE [dbo].[Pr_Who_IO] (  @SessionID int = NULL ) ASBEGINSET NOCOUNT ONSELECT    SPID                = er.session_id     ,Status             = ses.status     ,[Login]            = ses.login_name     ,Host               = ses.host_name     ,BlkBy              = er.blocking_session_id     ,DBName             = DB_Name(er.database_id)     ,CommandType        = er.command     ,SQLStatement       = st.text     ,ObjectName         = OBJECT_NAME(st.objectid)     ,ElapsedMS          = er.total_elapsed_time     ,CPUTime            = er.cpu_time     ,IOReads            = er.logical_reads + er.reads     ,IOWrites           = er.writes     ,LastWaitType       = er.last_wait_type     ,StartTime          = er.start_time     ,Protocol           = con.net_transport     ,ConnectionWrites   = con.num_writes     ,ConnectionReads    = con.num_reads     ,ClientAddress      = con.client_net_address     ,Authentication     = con.auth_scheme FROM sys.dm_exec_requests er OUTER APPLY sys.dm_exec_sql_text(er.sql_handle) st LEFT JOIN sys.dm_exec_sessions ses ON ses.session_id = er.session_id LEFT JOIN sys.dm_exec_connections con ON con.session_id = ses.session_id WHERE er.session_id > 50     AND @SessionID IS NULL OR er.session_id = @SessionID ORDER BY    er.blocking_session_id DESC    ,er.session_id SET NOCOUNT OFFEND GO-- =============================================-- Author:  ZHAOWENZHONG-- Create date: 2009-05-17-- Description: 查询DB的IO开销-- =============================================CREATE PROCEDURE Pr_DB_IOASBEGINSET NOCOUNT ONSELECT  creation_time  N'语句编译时间'         ,last_execution_time  N'上次执行时间'         ,total_physical_reads N'物理读取总次数'         ,total_logical_reads/execution_count N'每次逻辑读次数'         ,total_logical_reads  N'逻辑读取总次数'         ,total_logical_writes N'逻辑写入总次数'         , execution_count  N'执行次数'         , total_worker_time/1000 N'所用的CPU总时间ms'         , total_elapsed_time/1000  N'总花费时间ms'         , (total_elapsed_time / execution_count)/1000  N'平均时间ms'         ,SUBSTRING(st.text, (qs.statement_start_offset/2) + 1,          ((CASE statement_end_offset            WHEN -1 THEN DATALENGTH(st.text)           ELSE qs.statement_end_offset END              - qs.statement_start_offset)/2) + 1) N'执行语句' FROM sys.dm_exec_query_stats AS qs CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) st where SUBSTRING(st.text, (qs.statement_start_offset/2) + 1,          ((CASE statement_end_offset            WHEN -1 THEN DATALENGTH(st.text)           ELSE qs.statement_end_offset END              - qs.statement_start_offset)/2) + 1) not like '%FETCH%'  ORDER BY  total_elapsed_time / execution_count DESC; SET NOCOUNT OFFENDgo-- =============================================-- Author:  ZHAOWENZHONG-- Create date: 2009-05-17-- Description: 查询最大的IO开销SQL-- =============================================--默认取 50个io读取开销最大的语句 CREATE PROCEDURE Pr_Max_IO (@Top int =50) asBEGIN SET NOCOUNT ONSELECT TOP (@Top) SUBSTRING(qt.text, (qs.statement_start_offset/2)+1,    ((CASE qs.statement_end_offset  WHEN -1 THEN DATALENGTH(qt.text)  ELSE qs.statement_end_offset  END - qs.statement_start_offset)/2)+1),   qs.execution_count,   qs.total_logical_reads, qs.last_logical_reads,  qs.min_logical_reads, qs.max_logical_reads,  qs.total_elapsed_time, qs.last_elapsed_time,  qs.min_elapsed_time, qs.max_elapsed_time,  qs.last_execution_time,  qp.query_plan FROM sys.dm_exec_query_stats qs CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) qt CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp WHERE qt.encrypted=0 ORDER BY qs.total_logical_reads DESCSET NOCOUNT OFFEND GO--得到按照执行时间排序的前10 的存储过程的执行信息：SELECT TOP 10 a.object_id, a.database_id, OBJECT_NAME(object_id, database_id) 'proc name',a.cached_time, a.last_execution_time, a.total_elapsed_time, a.total_elapsed_time/a.execution_count AS [avg_elapsed_time],a.execution_count,a.total_physical_reads/a.execution_count avg_physical_reads,a.total_logical_writes,a.total_logical_writes/ a.execution_count  avg_logical_reads,a.last_elapsed_time,a.total_elapsed_time / a.execution_count   avg_elapsed_time,b.text,c.query_plan FROM sys.dm_exec_procedure_stats AS aCROSS APPLY sys.dm_exec_sql_text(a.sql_handle)  bCROSS APPLY sys.dm_exec_query_plan(a.plan_handle) cORDER BY [total_worker_time] DESC;GO