Sql Server CPU Control

This SQL query retrieves information about the top 10 currently executing sessions along with details about their associated queries. It uses the sys.dm_exec_sessions and sys.dm_exec_requests dynamic management views to gather information about sessions and their corresponding requests.

SELECT TOP 10 s.session_id,
 r.status,
 r.cpu_time,
 r.logical_reads,
 r.reads,
 r.writes,
 r.total_elapsed_time / (1000 * 60) 'Elaps M',
 SUBSTRING(st.TEXT, (r.statement_start_offset / 2) + 1,
 ((CASE r.statement_end_offset
 WHEN -1 THEN DATALENGTH(st.TEXT)
 ELSE r.statement_end_offset
 END - r.statement_start_offset) / 2) + 1) AS statement_text,
 COALESCE(QUOTENAME(DB_NAME(st.dbid)) + N'.' + QUOTENAME(OBJECT_SCHEMA_NAME(st.objectid, st.dbid))
 + N'.' + QUOTENAME(OBJECT_NAME(st.objectid, st.dbid)), '') AS command_text,
 r.command,
 s.login_name,
 s.host_name,
 s.program_name,
 s.last_request_end_time,
 s.login_time,
 r.open_transaction_count
FROM sys.dm_exec_sessions AS s
JOIN sys.dm_exec_requests AS r ON r.session_id = s.session_id 
CROSS APPLY sys.dm_exec_sql_text(r.sql_handle) AS st
WHERE r.session_id != @@SPID
ORDER BY r.cpu_time DESC

This query is useful for identifying and analyzing the top-consuming sessions in terms of CPU time, logical reads, and other metrics. It provides insights into the current activity on the SQL Server instance.