Top Cached SPs By Total Logical Writes (SQL 2008)

[sourcecode language=”sql”]

SELECT TOP(25) AS [SP Name], qs.total_logical_writes AS [TotalLogicalWrites],

qs.total_logical_writes/qs.execution_count AS [AvgLogicalWrites], qs.execution_count,

ISNULL(qs.execution_count/DATEDIFF(Second, qs.cached_time, GETDATE()), 0) AS [Calls/Second],

qs.total_elapsed_time, qs.total_elapsed_time/qs.execution_count AS [avg_elapsed_time],


FROM sys.procedures AS p WITH (NOLOCK)

INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK)

ON p.[object_id] = qs.[object_id]

WHERE qs.database_id = DB_ID()

ORDER BY qs.total_logical_writes DESC OPTION (RECOMPILE);


— Logical writes relate to both memory and disk I/O pressure

— This helps you find the most expensive cached stored procedures from a write I/O perspective

— You should look at this if you see signs of I/O pressure or of memory pressure

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