Examining Memory Pressure on SQL Server 2005 Caches

Here is a useful DMV query for looking at memory pressure on SQL Server 2005.

— Detect external and internal memory pressure
FROM sys.dm_os_memory_cache_clock_hands
WHERE rounds_count > 0
AND removed_all_rounds_count > 0

The clock_hand column tells you whether the clock algorithm is responding to internal (other SQL Server caches) or external memory pressure. If the values for the rounds_count and removed_all_rounds_count columns are increasing, this is a good sign of memory pressure.


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22 Responses to Examining Memory Pressure on SQL Server 2005 Caches

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