added "poor queries"

2023-02-28 16:59:50 +01:00
parent f176e59227
commit 153d0baf70
1 changed files with 152 additions and 0 deletions
--- a/queries.sql
+++ b/queries.sql
@@ -0,0 +1,152 @@
+SELECT TOP 100
+       'longest query' AS msg,
+       GETDATE() AS [Collection Date],
+       [qs].[execution_count] AS [Execution Count],
+       SUBSTRING(
+                    [qt].[text],
+                    [qs].[statement_start_offset] / 2 + 1,
+                    (CASE
+                         WHEN [qs].[statement_end_offset] = -1 THEN
+                             LEN(CONVERT(NVARCHAR(MAX), [qt].[text])) * 2
+                         ELSE
+                             [qs].[statement_end_offset]
+                     END - [qs].[statement_start_offset]
+                    ) / 2
+                ) AS [Query Text],
+       DB_NAME([qt].[dbid]) AS [DB Name],
+       [qs].[total_worker_time] AS [Total CPU Time],
+       [qs].[total_worker_time] / [qs].[execution_count] AS [Avg CPU Time (ms)],
+       [qs].[total_physical_reads] AS [Total Physical Reads],
+       [qs].[total_physical_reads] / [qs].[execution_count] AS [Avg Physical Reads],
+       [qs].[total_logical_reads] AS [Total Logical Reads],
+       [qs].[total_logical_reads] / [qs].[execution_count] AS [Avg Logical Reads],
+       [qs].[total_logical_writes] AS [Total Logical Writes],
+       [qs].[total_logical_writes] / [qs].[execution_count] AS [Avg Logical Writes],
+       [qs].[total_elapsed_time] AS [Total Duration],
+       [qs].[total_elapsed_time] / 1000000.0 AS [Total Duration seconds],
+       [qs].[total_elapsed_time] / [qs].[execution_count] / 1000000.0 AS [Avg Duration seconds],
+       [qp].[query_plan] AS [Plan],
+       [qs].[creation_time],
+       [qs].[last_execution_time]
+FROM [sys].[dm_exec_query_stats] AS [qs]
+    CROSS APPLY [sys].dm_exec_sql_text([qs].[sql_handle]) AS [qt]
+    CROSS APPLY [sys].dm_exec_query_plan([qs].[plan_handle]) AS [qp]
+WHERE
+--/* most often used */ [qs].[execution_count]                            > 50
+--/* most CPU intensive */ [qs].[total_worker_time] / [qs].[execution_count]    > 100  --[Avg CPU Time (ms)]
+--/* most read IO */ [qs].[total_physical_reads] / [qs].[execution_count] > 1000 --[Avg Physical Reads]
+--/* most intesive in reads */ [qs].[total_logical_reads] / [qs].[execution_count]  > 1000 --[Avg Logical Reads]
+--/* most IO intensive in write */ [qs].[total_logical_writes] / [qs].[execution_count] > 1000 --[Avg Logical Writes]
+/* longest queries */ [qs].[total_elapsed_time] / [qs].[execution_count] > 1000 --[Avg Duration (ms)]
+AND DB_NAME([qt].[dbid]) NOT IN ( 'master', 'msdb', 'model', 'tempDb' )
+ORDER BY
+--[Avg Logical Reads] DESC 
+--[qs].[execution_count] DESC
+--,[qs].[total_worker_time] / [qs].[execution_count] DESC
+--,[qs].[total_physical_reads] / [qs].[execution_count] DESC
+--,[qs].[total_logical_reads] / [qs].[execution_count] DESC
+--,[qs].[total_logical_writes] / [qs].[execution_count] DESC;
+/* average duration */ [qs].[total_elapsed_time] / [qs].[execution_count] DESC;
+
+
+SELECT TOP 100
+       'most cpu' AS msg,
+       GETDATE() AS [Collection Date],
+       [qs].[execution_count] AS [Execution Count],
+       SUBSTRING(
+                    [qt].[text],
+                    [qs].[statement_start_offset] / 2 + 1,
+                    (CASE
+                         WHEN [qs].[statement_end_offset] = -1 THEN
+                             LEN(CONVERT(NVARCHAR(MAX), [qt].[text])) * 2
+                         ELSE
+                             [qs].[statement_end_offset]
+                     END - [qs].[statement_start_offset]
+                    ) / 2
+                ) AS [Query Text],
+       DB_NAME([qt].[dbid]) AS [DB Name],
+       [qs].[total_worker_time] AS [Total CPU Time],
+       [qs].[total_worker_time] / [qs].[execution_count] AS [Avg CPU Time (ms)],
+       [qs].[total_physical_reads] AS [Total Physical Reads],
+       [qs].[total_physical_reads] / [qs].[execution_count] AS [Avg Physical Reads],
+       [qs].[total_logical_reads] AS [Total Logical Reads],
+       [qs].[total_logical_reads] / [qs].[execution_count] AS [Avg Logical Reads],
+       [qs].[total_logical_writes] AS [Total Logical Writes],
+       [qs].[total_logical_writes] / [qs].[execution_count] AS [Avg Logical Writes],
+       [qs].[total_elapsed_time] AS [Total Duration],
+       [qs].[total_elapsed_time] / 1000000.0 AS [Total Duration seconds],
+       [qs].[total_elapsed_time] / [qs].[execution_count] / 1000000.0 AS [Avg Duration seconds],
+       [qp].[query_plan] AS [Plan],
+       [qs].[creation_time],
+       [qs].[last_execution_time]
+FROM [sys].[dm_exec_query_stats] AS [qs]
+    CROSS APPLY [sys].dm_exec_sql_text([qs].[sql_handle]) AS [qt]
+    CROSS APPLY [sys].dm_exec_query_plan([qs].[plan_handle]) AS [qp]
+WHERE
+--/* most often used */ [qs].[execution_count]                            > 50
+/* most CPU intensive */ [qs].[total_worker_time] / [qs].[execution_count] > 100 --[Avg CPU Time (ms)]
+--/* most read IO */ [qs].[total_physical_reads] / [qs].[execution_count] > 1000 --[Avg Physical Reads]
+--/* most intesive in reads */ [qs].[total_logical_reads] / [qs].[execution_count]  > 1000 --[Avg Logical Reads]
+--/* most IO intensive in write */ [qs].[total_logical_writes] / [qs].[execution_count] > 1000 --[Avg Logical Writes]
+--/* longest queries */[qs].[total_elapsed_time] / [qs].[execution_count]   > 1000 --[Avg Duration (ms)]
+AND DB_NAME([qt].[dbid]) NOT IN ( 'master', 'msdb', 'model', 'tempDb' )
+ORDER BY
+--[Avg Logical Reads] DESC 
+--[qs].[execution_count] DESC
+/* cpu intensive */ [qs].[total_worker_time] / [qs].[execution_count] DESC;
+--,[qs].[total_physical_reads] / [qs].[execution_count] DESC
+--,[qs].[total_logical_reads] / [qs].[execution_count] DESC
+--,[qs].[total_logical_writes] / [qs].[execution_count] DESC;
+--/* average duration */,[qs].[total_elapsed_time] / [qs].[execution_count] DESC
+
+
+SELECT TOP 100
+       'most physical reads' AS msg,
+       GETDATE() AS [Collection Date],
+       [qs].[execution_count] AS [Execution Count],
+       SUBSTRING(
+                    [qt].[text],
+                    [qs].[statement_start_offset] / 2 + 1,
+                    (CASE
+                         WHEN [qs].[statement_end_offset] = -1 THEN
+                             LEN(CONVERT(NVARCHAR(MAX), [qt].[text])) * 2
+                         ELSE
+                             [qs].[statement_end_offset]
+                     END - [qs].[statement_start_offset]
+                    ) / 2
+                ) AS [Query Text],
+       DB_NAME([qt].[dbid]) AS [DB Name],
+       [qs].[total_worker_time] AS [Total CPU Time],
+       [qs].[total_worker_time] / [qs].[execution_count] AS [Avg CPU Time (ms)],
+       [qs].[total_physical_reads] AS [Total Physical Reads],
+       [qs].[total_physical_reads] / [qs].[execution_count] AS [Avg Physical Reads],
+       [qs].[total_logical_reads] AS [Total Logical Reads],
+       [qs].[total_logical_reads] / [qs].[execution_count] AS [Avg Logical Reads],
+       [qs].[total_logical_writes] AS [Total Logical Writes],
+       [qs].[total_logical_writes] / [qs].[execution_count] AS [Avg Logical Writes],
+       [qs].[total_elapsed_time] AS [Total Duration],
+       [qs].[total_elapsed_time] / 1000000.0 AS [Total Duration seconds],
+       [qs].[total_elapsed_time] / [qs].[execution_count] / 1000000.0 AS [Avg Duration seconds],
+       [qp].[query_plan] AS [Plan],
+       [qs].[creation_time],
+       [qs].[last_execution_time]
+FROM [sys].[dm_exec_query_stats] AS [qs]
+    CROSS APPLY [sys].dm_exec_sql_text([qs].[sql_handle]) AS [qt]
+    CROSS APPLY [sys].dm_exec_query_plan([qs].[plan_handle]) AS [qp]
+WHERE
+--/* most often used */ [qs].[execution_count]                            > 50
+--/* most CPU intensive */ [qs].[total_worker_time] / [qs].[execution_count]    > 100  --[Avg CPU Time (ms)]
+/* most read IO */ [qs].[total_physical_reads] / [qs].[execution_count] > 1000 --[Avg Physical Reads]
+--/* most intesive in reads */ [qs].[total_logical_reads] / [qs].[execution_count]  > 1000 --[Avg Logical Reads]
+--/* most IO intensive in write */ [qs].[total_logical_writes] / [qs].[execution_count] > 1000 --[Avg Logical Writes]
+--/* longest queries */[qs].[total_elapsed_time] / [qs].[execution_count]   > 1000 --[Avg Duration (ms)]
+AND DB_NAME([qt].[dbid]) NOT IN ( 'master', 'msdb', 'model', 'tempDb' )
+ORDER BY
+--[Avg Logical Reads] DESC 
+--[qs].[execution_count] DESC
+--,[qs].[total_worker_time] / [qs].[execution_count] DESC
+/* most disk activity */ [qs].[total_physical_reads] / [qs].[execution_count] DESC;
+--,[qs].[total_logical_reads] / [qs].[execution_count] DESC
+--,[qs].[total_logical_writes] / [qs].[execution_count] DESC;
+--/* average duration */,[qs].[total_elapsed_time] / [qs].[execution_count] DESC
+