Use this practical guide to analyze and troubleshoot SQL Server
performance using wait statistics. You'll learn to identify precisely
why your queries are running slowly. And you'll know how to measure the
amount of time consumed by each bottleneck so you can focus attention on
making the largest improvements first. This edition is updated to cover
analysis of wait statistics current with SQL Server 2022. Whether you
are new to wait statistics, or already familiar with them, this book
provides a deeper understanding on how wait statistics are generated and
what they mean for your SQL Server instance's performance.
The book goes beyond the most common wait types into the more complex
and performance-threatening wait types. You'll learn about per-query
wait statistics and session-based wait statistics, and the types of
problems they can help you solve. The different wait types are
categorized by their area of impact, including CPU, IO, Latching,
Locking, and many more.
Clear examples are included to help you gain practical knowledge of why
and how specific wait times increase or decrease, how they impact your
SQL Server's performance, and what you can do to improve performance.
After reading this book, you won't want to be without the valuable
information that wait statistics provide regarding where you should be
spending your limited tuning time to maximize performance and value to
your business.
What You'll Learn
-
Understand how the SQL Server engine processes requests
-
Identify resource bottlenecks in a running SQL Server instance
-
Locate wait statistics information inside DMVs and Query Store
-
Analyze the root cause of sub-optimal performance
-
Diagnose I/O contention and locking contention
-
Benchmark SQL Server performance
-
Improve database performance by lowering overall wait time
Who This Book Is For
Database administrators who want to identify and resolve performance
bottlenecks, those who want to learn more about how the SQL Server
engine accesses and uses resources inside SQL Server, and administrators
concerned with achieving--and knowing they have achieved--optimal
performance
