sync current state§

2023-01-04 16:52:04 +01:00
parent 37470b9e4b
commit c6c072f921
10 changed files with 176 additions and 20 deletions
--- a/cache.sql
+++ b/cache.sql
@@ -0,0 +1,62 @@
+/* 
+Attention, toutes les colonnes sont en microseconde. Pour obtenir 1 seconde, diviser par 1'000'000 ; 
+pour obtenir 1 minute, diviser par 60'000'000 
+*/
+
+/**********************************************************************
+
+   Extraction des requêtes SQL peu performantes sur l'instance SQL.
+
+   Renseigner l'"ORDER BY ... DESC" au préalable.
+
+   Attention, toutes les colonnes sont en microseconde.
+   Pour obtenir 1 seconde, diviser par 1'000'000 ;
+   pour obtenir 1 minute, diviser par 60'000'000.
+
+ **********************************************************************/
+
+SELECT TOP 100
+       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 
+ -- [qs].[execution_count]                            > 50
+ --OR [qs].[total_worker_time] / [qs].[execution_count]    > 100  --[Avg CPU Time (ms)]
+ --OR [qs].[total_physical_reads] / [qs].[execution_count] > 1000 --[Avg Physical Reads]
+ [qs].[total_logical_reads] / [qs].[execution_count]  > 1000 --[Avg Logical Reads]
+ --OR [qs].[total_logical_writes] / [qs].[execution_count] > 1000 --[Avg Logical Writes]
+ --OR [qs].[total_elapsed_time] / [qs].[execution_count]   > 1000 --[Avg Duration (ms)]
+ ORDER BY 
+        [Avg Logical Reads] DESC 
+         -- [qs].[execution_count] DESC
+         --,[qs].[total_elapsed_time] / [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;