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Posted Thursday, January 10, 2013 10:59 PM
Right there with Babe

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Hi All,

Recently, i am going through the memory concepts of sql server 2008 and i need some clarifications from expericenced folks to get better clarity on below terms and objects.
What is Memory object and memory node and where does the memory clerks and single allocators and Multi page allocators fit in Memory Allocations.
Basically, How does sql server allocates memory for a request and also interested to know who all are the memory consumers? is the ones which are present in sys.dm_os_memory_clerks(bpool,sqlutilities.. ) are the memory consumers
or else is there anything like external memory consumers. Need clarifications on this.

Any brief descriptions with example would be a great help. Looking forward for your valuable comments.

Thanks in advance.
Post #1405763
Posted Friday, January 11, 2013 5:19 AM


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Oracle_91 (1/10/2013)
Hi All,

Recently, i am going through the memory concepts of sql server 2008 and i need some clarifications from expericenced folks to get better clarity on below terms and objects.
What is Memory object and memory node and where does the memory clerks and single allocators and Multi page allocators fit in Memory Allocations.
Basically, How does sql server allocates memory for a request and also interested to know who all are the memory consumers? is the ones which are present in sys.dm_os_memory_clerks(bpool,sqlutilities.. ) are the memory consumers
or else is there anything like external memory consumers. Need clarifications on this.

Any brief descriptions with example would be a great help. Looking forward for your valuable comments.

Thanks in advance.

Why do you want to know?

If you are seriously interested in the inner workings of the memory subsystem then I can recommend this book to you:

Microsoft® SQL Server® 2008 Internals (Pro - Developer) [Paperback]
Kalen Delaney (Author), Paul S. Randal (Author), Kimberly L. Tripp (Author), Conor Cunningham (Author), Adam Machanic (Author)


It answers the question you are asking, and a whole lot more related to the topic required to fully understand how memory is managed inside SQL Server 2008.

Spoiler alert: memory management has been drastically reworked in SQL Server 2012 so if you're getting into SQL Server and you want to learn the latest technology then skip the 2008 book and go for Microsoft SQL Server 2012 Internals [Paperback] by Kalen Delaney (Author)


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There are no special teachers of virtue, because virtue is taught by the whole community. --Plato
Post #1405922
Posted Thursday, January 17, 2013 8:30 PM
Right there with Babe

Right there with BabeRight there with BabeRight there with BabeRight there with BabeRight there with BabeRight there with BabeRight there with BabeRight there with Babe

Group: General Forum Members
Last Login: Wednesday, November 12, 2014 11:36 AM
Points: 774, Visits: 1,742
Thank you.
Post #1408698
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