Book Image

PostgreSQL High Performance Cookbook

By : Chitij Chauhan, Dinesh Kumar
Book Image

PostgreSQL High Performance Cookbook

By: Chitij Chauhan, Dinesh Kumar

Overview of this book

PostgreSQL is one of the most powerful and easy to use database management systems. It has strong support from the community and is being actively developed with a new release every year. PostgreSQL supports the most advanced features included in SQL standards. It also provides NoSQL capabilities and very rich data types and extensions. All of this makes PostgreSQL a very attractive solution in software systems. If you run a database, you want it to perform well and you want to be able to secure it. As the world’s most advanced open source database, PostgreSQL has unique built-in ways to achieve these goals. This book will show you a multitude of ways to enhance your database’s performance and give you insights into measuring and optimizing a PostgreSQL database to achieve better performance. This book is your one-stop guide to elevate your PostgreSQL knowledge to the next level. First, you’ll get familiarized with essential developer/administrator concepts such as load balancing, connection pooling, and distributing connections to multiple nodes. Next, you will explore memory optimization techniques before exploring the security controls offered by PostgreSQL. Then, you will move on to the essential database/server monitoring and replication strategies with PostgreSQL. Finally, you will learn about query processing algorithms.
Table of Contents (19 chapters)
PostgreSQL High Performance Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Identifying CPU bottlenecks


In this recipe, we are going to use the mpstat command to identify CPU bottlenecks.

How to do it...

The mpstat command is used to report per processor statistics in a tabular format.

We are now going to show the usage of the mpstat command:

bash-3.2$ mpstat 1 1 
 
CPU minf mjf xcal  intr ithr  csw icsw migr smtx  srw syscl  usr sys  wt idl 
  0  672   0 2457   681   12  539   17   57  119    0  4303   18  10   0  73 
  1   90   0 1551   368   22  344    6   37  104    0  3775   17   4   0  79 
  2   68   0 1026   274   14  217    4   24   83    0  2393   11   3   0  86 
  3   50   0  568   218    9  128    3   17   56    0  1319    7   2   0  92 
  4   27   0  907   340   12  233    3   22   72    0  2034    9   2   0  88 
  5   75   0 1777   426   25  370    5   33  111    0  4820   22   4   0  74   

How it works...

In the preceding output of the mpstat command, each row of the table represents the activity of one processor...