{"id":1111,"date":"2017-03-12T17:55:51","date_gmt":"2017-03-12T12:25:51","guid":{"rendered":"http:\/\/pramodsingla.com\/?p=1111"},"modified":"2017-03-12T17:55:51","modified_gmt":"2017-03-12T12:25:51","slug":"sql-server-tuning-top-10-cpu-intensive-queries","status":"publish","type":"post","link":"https:\/\/pramodsingla.com\/?p=1111","title":{"rendered":"SQL Server Tuning : Top 10 CPU Intensive Queries"},"content":{"rendered":"

Problem Statement: <\/strong>Script to find top 10 CPU intensive\u00a0queries.<\/h2>\n

Solution:<\/strong><\/h2>\n

SELECT<\/span>\u00a0TOP<\/span>\u00a010<\/span>\u00a0Object_name<\/i><\/span>(<\/span>qt<\/span>.<\/span>objectid<\/span>)<\/span>
\nAS<\/span>\u00a0‘SP\u00a0Name’<\/span>,<\/span>
\nSubstring<\/i><\/span>(<\/span>qt<\/span>.<\/span>text<\/span>,<\/span>\u00a0(<\/span>\u00a0qs<\/span>.<\/span>statement_start_offset<\/span>\u00a0\/<\/span>\u00a02<\/span>\u00a0)<\/span>\u00a0+<\/span>\u00a01<\/span>,<\/span>
\n(<\/span>
\n(<\/span>\u00a0CASE<\/span>\u00a0qs<\/span>.<\/span>statement_end_offset<\/span>
\nWHEN<\/span>\u00a0–<\/span>1<\/span>\u00a0THEN<\/span>\u00a0Datalength<\/i><\/span>(<\/span>qt<\/span>.<\/span>text<\/span>)<\/span>
\nELSE<\/span>\u00a0qs<\/span>.<\/span>statement_end_offset<\/span>
\nEND<\/span>
\n–<\/span>
\nqs<\/span>.<\/span>statement_start_offset<\/span>\u00a0)<\/span>\u00a0\/<\/span>\u00a02<\/span>\u00a0)<\/span>\u00a0+<\/span>\u00a01<\/span>)<\/span>
\nAS<\/span>\u00a0statement_text<\/span>,<\/span>
\ntotal_logical_reads<\/span>,<\/span>
\nqs<\/span>.<\/span>execution_count<\/span>
\nAS<\/span>\u00a0‘Execution\u00a0Count’<\/span>,<\/span>
\ntotal_logical_reads<\/span>\u00a0\/<\/span>\u00a0qs<\/span>.<\/span>execution_count<\/span>
\nAS<\/span>\u00a0‘AvgLogicalReads’<\/span>,<\/span>
\nqs<\/span>.<\/span>execution_count<\/span>\u00a0\/<\/span>\u00a0Datediff<\/i><\/span>(<\/span>minute<\/span>,<\/span>\u00a0qs<\/span>.<\/span>creation_time<\/span>,<\/span>\u00a0Getdate<\/i><\/span>(<\/span>)<\/span>)<\/span>
\nAS<\/span>
\n‘Calls\/minute’<\/span>,<\/span>
\nqs<\/span>.<\/span>total_worker_time<\/span>\u00a0\/<\/span>\u00a0qs<\/span>.<\/span>execution_count<\/span>
\nAS<\/span>\u00a0‘AvgWorkerTime’<\/span>,<\/span>
\nqs<\/span>.<\/span>total_worker_time<\/span>
\nAS<\/span>\u00a0‘TotalWorkerTime’<\/span>,<\/span>
\nqs<\/span>.<\/span>total_elapsed_time<\/span>\u00a0\/<\/span>\u00a0qs<\/span>.<\/span>execution_count<\/span>
\nAS<\/span>\u00a0‘AvgElapsedTime’<\/span>,<\/span>
\nqs<\/span>.<\/span>total_logical_writes<\/span>,<\/span>
\nqs<\/span>.<\/span>max_logical_reads<\/span>,<\/span>
\nqs<\/span>.<\/span>max_logical_writes<\/span>,<\/span>
\nqs<\/span>.<\/span>total_physical_reads<\/span>,<\/span>
\nqt<\/span>.<\/span>dbid<\/span>,<\/span>
\nqp<\/span>.<\/span>query_plan<\/span>
\nFROM<\/span>\u00a0\u00a0\u00a0sys<\/span>.<\/span>dm_exec_query_stats<\/span>\u00a0AS<\/span>\u00a0qs<\/span>
\nCROSS<\/span>\u00a0apply<\/span>\u00a0sys<\/span>.<\/span>Dm_exec_sql_text<\/b><\/span>(<\/span>qs<\/span>.<\/span>sql_handle<\/span>)<\/span>\u00a0AS<\/span>\u00a0qt<\/span>
\nOUTER<\/span>\u00a0apply<\/span>\u00a0sys<\/span>.<\/span>Dm_exec_query_plan<\/b><\/span>(<\/span>qs<\/span>.<\/span>plan_handle<\/span>)<\/span>\u00a0qp<\/span>
\nWHERE<\/span>\u00a0\u00a0qt<\/span>.<\/span>dbid<\/span>\u00a0=<\/span>\u00a0Db_id<\/i><\/span>(<\/span>)<\/span>\u00a0—\u00a0Filter\u00a0by\u00a0current\u00a0database<\/i><\/span>
\nORDER<\/span>\u00a0\u00a0BY<\/span>\u00a0totalworkertime<\/span>\u00a0DESC<\/span><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

Problem Statement: Script to find top 10 CPU intensive\u00a0queries. Solution: SELECT\u00a0TOP\u00a010\u00a0Object_name(qt.objectid) AS\u00a0‘SP\u00a0Name’, Substring(qt.text,\u00a0(\u00a0qs.statement_start_offset\u00a0\/\u00a02\u00a0)\u00a0+\u00a01, ( (\u00a0CASE\u00a0qs.statement_end_offset WHEN\u00a0–1\u00a0THEN\u00a0Datalength(qt.text) ELSE\u00a0qs.statement_end_offset END – qs.statement_start_offset\u00a0)\u00a0\/\u00a02\u00a0)\u00a0+\u00a01)[…]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[23],"tags":[66,75],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts\/1111"}],"collection":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1111"}],"version-history":[{"count":0,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts\/1111\/revisions"}],"wp:attachment":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}