Pro SQL Server 2019 Wait Statistics

A Practical Guide to Analyzing Performance in SQL Server

  • Enrico van de Laar

Table of contents

  1. Front Matter
    Pages i-xxv
  2. Foundations of Wait Statistics Analysis

    1. Front Matter
      Pages 1-1
    2. Enrico van de Laar
      Pages 3-23
    3. Enrico van de Laar
      Pages 25-61
    4. Enrico van de Laar
      Pages 63-73
    5. Enrico van de Laar
      Pages 75-99
  3. Wait Types

    1. Front Matter
      Pages 101-101
    2. Enrico van de Laar
      Pages 103-137
    3. Enrico van de Laar
      Pages 139-187
    4. Enrico van de Laar
      Pages 189-201
    5. Enrico van de Laar
      Pages 203-233
    6. Enrico van de Laar
      Pages 235-277
    7. Enrico van de Laar
      Pages 279-300
    8. Enrico van de Laar
      Pages 301-325
    9. Enrico van de Laar
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    10. Enrico van de Laar
      Pages 355-372
    11. Enrico van de Laar
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    12. Enrico van de Laar
      Pages 377-380
    13. Enrico van de Laar
      Pages 381-390
  4. Back Matter
    Pages 391-399

About this book


Here is a practical guide for analyzing and troubleshooting SQL Server performance using wait statistics. Learn to identify precisely why your queries are running slowly. Measure the amount of time consumed by each bottleneck so that you can focus attention on making the largest improvements first. This edition is updated to cover analysis of wait statistics inside Query Store, the CXCONSUMER wait event, and to be current with SQL Server 2019. 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 can mean for your SQL Server instance’s performance. 

Pro SQL Server 2019 Wait Statistics 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 each can help you solve. The different wait types are categorized by their area of impact, including CPU, IO, Lock, and many more.

The book presents clear examples to help you gain practical knowledge of why and how specific wait times increase or decrease, and how they impact your SQL Server’s 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:

  • 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
  • Lower the wait time of the most popular wait types


Troubleshooting Performance Performance Optimization Query Store Resource Bottlenecks Dynamic Management Views (DMVs) I/O Contention Benchmarking Performance Baseline Backup Wait Types High-Availability and Disaster Recovery Wait Types SQL Server 2019 Wait Statistics

Authors and affiliations

  • Enrico van de Laar
    • 1
  1. 1.DrachtenThe Netherlands

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