August 2012
Intermediate to advanced
1416 pages
33h 39m
English
book
Microsoft SQL Server 2012 Bible
by Adam Jorgensen, Jorge Segarra, Patrick LeBlanc, Jose Chinchilla, Aaron Nelson
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Exploring the Fundamentals of the Resource Governor
The Resource Governor relies on resource pools, workload groups, and classifier functions. This section covers these concepts. You need to understand them before using the Resource Governor.
Understanding the Resource Pool
A resource pool collects physical resources together so that you can manage them. Under the covers, a resource pool acts as a virtual instance of SQL Server when accessed by an application. It has a number of parameters including the minimum and maximum values for the resource. This may include CPU utilization and memory usage. (File I/O is planned for a later version of SQL Server — most DBAs currently reduce I/O contention by separating databases, tables, or indexes onto different physical disks.) SQL Server 2012 can have up to 64 user-defined resource pools (64-bit versions only), up from the limit of 18 in the previous release. In addition, there are two built-in pools:
- Internal: Used solely by the Database Engine. This cannot be reconfigured by the user.
- Default: Used by all those workloads that have not been assigned to any specific resource pool.
SQL Server DBAs can also define their custom resource pools. The custom resource pools can define limits for each resource with minimum and maximum values. The sum of all resource pool minimum values can't exceed 100 percent. The maximum values for each resource pool can range from 0 to 100.
A resource pool cannot always operate at its maximum value. The reason ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.