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PostgreSQL High Performance Cookbook

You're reading from  PostgreSQL High Performance Cookbook

Product type Book
Published in Mar 2017
Publisher Packt
ISBN-13 9781785284335
Pages 360 pages
Edition 1st Edition
Languages
Authors (2):
Chitij Chauhan Chitij Chauhan
Profile icon Chitij Chauhan
Dinesh Kumar Dinesh Kumar
Profile icon Dinesh Kumar
View More author details
Toc

Table of Contents (19) Chapters close

PostgreSQL High Performance Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
1. Database Benchmarking 2. Server Configuration and Control 3. Device Optimization 4. Monitoring Server Performance 5. Connection Pooling and Database Partitioning 6. High Availability and Replication 7. Working with Third-Party Replication Management Utilities 8. Database Monitoring and Performance 9. Vacuum Internals 10. Data Migration from Other Databases to PostgreSQL and Upgrading the PostgreSQL Cluster 11. Query Optimization 12. Database Indexing

Monitoring CPU usage


In this recipe, we are going to use the sar command to monitor CPU usage on the system.

Getting ready

The commands used in this recipe have been performed on a Sun Solaris machine. Hence the command output may vary in different Unix and Linux-related systems.

How to do it...

We can use the sar command with the -u switch to monitor CPU utilization:

bash-3.2$ sar -u 10 8 
SunOS usstlz-pinfsi09 5.10 Generic_150400-04 sun4u    08/06/2014 
 
23:32:17    %usr    %sys    %wio   %idle 
23:32:27      80      14       3      3 
23:32:37      70      14      12      4 
23:32:47      72      13      21      4 
23:32:57      76      14       6      3 
23:33:07      73      10      13      4 
23:33:17      71       8      17      4 
23:33:27      67       9      20      4 
23:33:37      69      10      17      4 
 
Average       73      11      13      4 

In the preceding command with the -u switch, two values are...

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