November 2012
Intermediate to advanced
576 pages
17h 2m
English
book
Professional SQL Server 2012 Internals and Troubleshooting
by Christian Bolton, James Rowland-Jones, Glenn Berry, Justin Langford, Gavin Payne, Amit Banerjee
Content preview from Professional SQL Server 2012 Internals and TroubleshootingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
Chapter 3
Understanding Memory
WHAT’S IN THIS CHAPTER?
- Understanding physical memory and how to use virtual memory addressing
- NUMA architecture and how SQL Server uses it
- SQL Server’s memory clerks, caches, and pools
- Looking at SQL Server’s plan cache
- An in-depth look at Query/Workspace memory
- Memory configuration options including Max Server Memory, Lock Pages in Memory, and Optimize for Ad-hoc Workloads
WROX.COM CODE DOWNLOADS FOR THIS CHAPTER
The wrox.com code downloads for this chapter are found at www.wrox.com/remtitle.cgi?isbn=1118177657 on the Download Code tab. The code is in the Chapter 3 download and individually named according to the names throughout the chapter.
INTRODUCTION
Memory, disk, and CPU are the holy trinity of resources in a computer system, and memory is first because it’s the area you’re most likely to have an issue with. Memory issues can cause both disk and CPU saturation, so when troubleshooting a server issue (or at least a performance issue), you need to start by looking at the memory profile of the system.
Understanding how Windows and SQL Server interact with and manage memory is crucial for gaining an understanding of the actual memory usage of a server you’re troubleshooting.
The first part of this chapter explains the fundamentals of how Windows manages memory and explains the difference and relationship between physical and virtual memory. The second part focuses on SQL Server’s internal memory structures, how they are managed, and how you ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.