How Perfmon Memory Counters Fit Together

Lonny Niederstadt takes us through a tour of how various Perfmon memory counters relate:

Wading through all of the SQL Server memory-related perfmon counters to understand how they related to each other took me a really long time.  Time-series graphs that show the relationship help me tremendously, and when I started trying to account for SQL Server memory years ago I couldn’t find any.  So I started to blog some time-series graphs, under the theory that either my understanding was correct and my graphs would be helpful to someone… or they’d be wrong and someone would correct me.
Well… its been about 5 years and my graphs haven’t generated too much discussion, but they’ve really helped me 😀😀😀

Perfmon: SQL Server Database pages + Stolen pages + Free pages = Total pages
http://sql-sasquatch.blogspot.com/2013/09/perfmon-database-pages-stolen-pages.html

Working with SQL Server 2016 and some demanding ColumnStore batch mode workloads, I began to see suspicious numbers, and graphs that didn’t make sense to me.  Today I got pretty close to figuring it out so I wanted to share what I’ve learned.

The following graphs are from a 4×10 physical server running Windows and SQL Server.  Four sockets, 4 NUMA nodes.

For bonus points, Lonny traces down a problem where expectations aren’t meeting reality.

Related Posts

Defining Downtime Down

Andy Mallon takes us through the notion of downtime: There’s a lot of discussion about preventing downtime. As a DBA and IT professional, it’s my sworn duty to prevent downtime. I usually describe my job as DBA something along the lines of, “to make sure data is always available to the people and applications that […]

Read More

Trying Out the Data Migration Assistant

Dave Mason shares some thoughts on the Data Migration Assistant: I recently took advantage of an opportunity to try Mirosoft’s Data Migration Assistant. It was a good experience and I found the tool quite useful. As the documentation tells us, the DMA “helps you upgrade to a modern data platform by detecting compatibility issues that can impact database […]

Read More

Categories

July 2018
MTWTFSS
« Jun Aug »
 1
2345678
9101112131415
16171819202122
23242526272829
3031