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Detect Memory Pressure on a SQL Server Instance Expand / Collapse
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Posted Monday, November 5, 2012 5:00 AM


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Hi,

Is there a way to detect from within SQL (i.e. not using perf mon counters) that my system is suffering from memory pressure?

For example for CPU I have used sys.dm_os_ring_buffers DMV (particularly buffer type: RING_BUFFER_SCHEDULER_MONITOR) to detect CPU over-utilization if the ring_buffer sampling rate showed 3 consecutive entries above 80% utilization. Is there some way to do the same with memory?

I have tried:
> Using sys.dm_os_ring_buffers DMV with RING_BUFFER_RESOURCE_MONITOR: Doesn't seem to be as sensitive (or accurate?) as I would like it to be, I know the box is suffering from memory issues but this DMV is not reporting anything.
> Using the dm_os_memory_clerks DMV (as highlighted in this article): I think this particular DMV has changed since SQL 2005, and am not sure how to map the new column to the old columns mentioned in the article.

Any suggestions/guidance on what I should use?, or should I abandon this concept and start looking at perf mon counters instead?

Thanks!


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