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How to find CPU expensive queries

Antonios Chatzipavlis

Wednesday 12 February 2014

CPUAuditingBenchmarksDB DeveloperDBAIT ProfessionalMonitoringPerformance / TunningTips & TricksTroubleshooting

Πριν από πολλά χρόνια είχα γράψει ένα σχετικό post με μια stored procedure. Με τα χρόνια αυτό άλλαζε καθώς οι ανάγκες και οι δυνατότητες άλλαζαν. Απλά σήμερα έτυχε να το χρησιμοποιήσω πάλι και λέω δε το μοιράζομαι με τον κόσμο όλο και κάποιος θα το χρειαστεί.

Δουλεύει σε SQL Server 2008, 2008R2, 2012, 2014

Όλοι οι χρόνοι είναι σε microseconds

SELECT TOP 50 
          qs.creation_time
        , qs.execution_count
        , qs.total_worker_time as total_cpu_time
        , qs.max_worker_time as max_cpu_time
        , qs.total_elapsed_time
        , qs.max_elapsed_time
        , qs.total_logical_reads
        , qs.max_logical_reads
        , qs.total_physical_reads
        , qs.max_physical_reads
        , t.[text]
        , qp.query_plan
        , t.dbid
        , t.objectid
        , t.encrypted
        , qs.plan_handle
        , qs.plan_generation_num
FROM sys.dm_exec_query_stats qs 
CROSS APPLY sys.dm_exec_sql_text(plan_handle) AS t
CROSS APPLY sys.dm_exec_query_plan(plan_handle) AS qp
ORDER BY qs.total_worker_time DESC

Enjoy :)

/*antonch*/

Antonios Chatzipavlis

Antonios Chatzipavlis is a highly experienced Data Solutions Consultant and Trainer. He has been working in the IT industry since 1988, holding various roles such as senior developer, IT Manager, Data & AI Solutions Architect and Consultant.

Since 1995, Antonios has focused on modern technologies and software development tools, primarily by Microsoft. He has specialized in Data & AI since 2000, with expertise in Microsoft Data Platform (SQL Server, Azure SQL Databases, Azure Synapse Analytics, Microsoft Fabric, Power BI, AI) and Databricks.

Antonios is also a Microsoft Certified Trainer (MCT) for over 25 years, has been recognized as a Microsoft Most Valuable Professional (MVP) in Data Platform since 2010 and he is in the Data Expert 40 Powerlist 2024 by Boussias. He is the co-founder and visionary behind XLYTiCA, a company dedicated to Data & AI solutions.