{"id":1238,"date":"2018-04-18T12:23:49","date_gmt":"2018-04-18T11:23:49","guid":{"rendered":"https:\/\/dbafox.com\/?p=1238"},"modified":"2018-08-03T11:14:14","modified_gmt":"2018-08-03T10:14:14","slug":"sql-server-memory-and-cpu-consumption","status":"publish","type":"post","link":"https:\/\/dbafox.com\/?p=1238","title":{"rendered":"SQL Server – Memory and CPU Consumption"},"content":{"rendered":"
\r\n-- total buffer usage by database for current instance\r\nWITH DB_CPU_Stats\r\nAS\r\n(SELECT DatabaseID, DB_Name(DatabaseID) AS [DatabaseName], SUM(total_worker_time) AS [CPU_Time_Ms]\r\n FROM sys.dm_exec_query_stats AS qs\r\n CROSS APPLY (SELECT CONVERT(int, value) AS [DatabaseID] \r\n              FROM sys.dm_exec_plan_attributes(qs.plan_handle)\r\n              WHERE attribute = N'dbid') AS F_DB\r\n GROUP BY DatabaseID)\r\nSELECT ROW_NUMBER() OVER(ORDER BY [CPU_Time_Ms] DESC) AS [row_num],\r\n       DatabaseName, [CPU_Time_Ms], \r\n       CAST([CPU_Time_Ms] * 1.0 \/ SUM([CPU_Time_Ms]) OVER() * 100.0 AS DECIMAL(5, 2)) AS [CPUPercent]\r\nFROM DB_CPU_Stats\r\nWHERE DatabaseID > 4 -- system databases\r\nAND DatabaseID <> 32767 -- ResourceDB\r\nORDER BY row_num OPTION (RECOMPILE);\r\n\r\n-- Memory utilization by database\r\nSELECT DB_NAME(database_id) AS [Database Name],\r\nCOUNT(*) * 8\/1024.0 AS [Cached Size (MB)]\r\nFROM sys.dm_os_buffer_descriptors\r\nWHERE database_id > 4 -- system databases\r\nAND database_id <> 32767 -- ResourceDB\r\nGROUP BY DB_NAME(database_id)\r\nORDER BY [Cached Size (MB)] DESC OPTION (RECOMPILE);\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
— total buffer usage by database for current instance WITH DB_CPU_Stats AS (SELECT DatabaseID, DB_Name(DatabaseID) AS [DatabaseName], SUM(total_worker_time) AS [CPU_Time_Ms] FROM sys.dm_exec_query_stats AS qs CROSS APPLY (SELECT CONVERT(int, value) AS [DatabaseID] FROM sys.dm_exec_plan_attributes(qs.plan_handle) WHERE attribute = N’dbid’) AS F_DB GROUP … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pgc_sgb_lightbox_settings":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[24],"tags":[],"class_list":["post-1238","post","type-post","status-publish","format-standard","hentry","category-ms-sql-server"],"yoast_head":"\nSQL Server - Memory and CPU Consumption - dbafox<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dbafox.com\/?p=1238\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SQL Server - Memory and CPU Consumption - dbafox\" \/>\n<meta property=\"og:description\" content=\"-- total buffer usage by database for current instance WITH DB_CPU_Stats AS (SELECT DatabaseID, DB_Name(DatabaseID) AS [DatabaseName], SUM(total_worker_time) AS [CPU_Time_Ms] FROM sys.dm_exec_query_stats AS qs CROSS APPLY (SELECT CONVERT(int, value) AS [DatabaseID] FROM sys.dm_exec_plan_attributes(qs.plan_handle) WHERE attribute = N'dbid') AS F_DB GROUP … Continue reading →\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dbafox.com\/?p=1238\" \/>\n<meta property=\"og:site_name\" content=\"dbafox\" \/>\n<meta property=\"article:published_time\" content=\"2018-04-18T11:23:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-08-03T10:14:14+00:00\" \/>\n<meta name=\"author\" content=\"Ray Fox\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ray Fox\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/dbafox.com\/?p=1238\",\"url\":\"https:\/\/dbafox.com\/?p=1238\",\"name\":\"SQL Server - 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Memory and CPU Consumption - dbafox","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/dbafox.com\/?p=1238","og_locale":"en_GB","og_type":"article","og_title":"SQL Server - Memory and CPU Consumption - dbafox","og_description":"-- total buffer usage by database for current instance WITH DB_CPU_Stats AS (SELECT DatabaseID, DB_Name(DatabaseID) AS [DatabaseName], SUM(total_worker_time) AS [CPU_Time_Ms] FROM sys.dm_exec_query_stats AS qs CROSS APPLY (SELECT CONVERT(int, value) AS [DatabaseID] FROM sys.dm_exec_plan_attributes(qs.plan_handle) WHERE attribute = N'dbid') AS F_DB GROUP … Continue reading →","og_url":"https:\/\/dbafox.com\/?p=1238","og_site_name":"dbafox","article_published_time":"2018-04-18T11:23:49+00:00","article_modified_time":"2018-08-03T10:14:14+00:00","author":"Ray Fox","twitter_misc":{"Written by":"Ray Fox","Estimated reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/dbafox.com\/?p=1238","url":"https:\/\/dbafox.com\/?p=1238","name":"SQL Server - 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