Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases now! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Red Hat Enterprise Linux Server Cookbook

You're reading from   Red Hat Enterprise Linux Server Cookbook Over 60 recipes to help you build, configure, and orchestrate RHEL 7 Server to make your everyday administration experience seamless

Arrow left icon
Product type Paperback
Published in Dec 2015
Publisher
ISBN-13 9781784392017
Length 250 pages
Edition 1st Edition
Tools
Concepts
Arrow right icon
Authors (2):
Arrow left icon
Jakub Gaj Jakub Gaj
Author Profile Icon Jakub Gaj
Jakub Gaj
William Leemans William Leemans
Author Profile Icon William Leemans
William Leemans
Arrow right icon
View More author details
Toc

Table of Contents (12) Chapters Close

Preface 1. Working with KVM Guests FREE CHAPTER 2. Deploying RHEL "En Masse" 3. Configuring Your Network 4. Configuring Your New System 5. Using SELinux 6. Orchestrating with Ansible 7. Puppet Configuration Management 8. Yum and Repositories 9. Securing RHEL 7 10. Monitoring and Performance Tuning Index

Monitoring RAM performance


To monitor RAM performance, I am only interested in a couple of metrics, not all the memory-related ones. Take a look at this list:

  • mem.util.used

  • mem.util.free

  • mem.util.bufmem

  • mem.util.cached

  • swap.free

  • swap.used

  • swap.pagesin

  • swap.pagesout

How to do it…

This recipe will explain you how to create text-based and graphical outputs:

  1. First, display live data for the preceding metrics through this command:

    ~]# pmdumptext -H -t 1 -i -l mem.util.used mem.util.free mem.util.bufmem mem.util.cached swap.free swap.used swap.pagesin swap.pagesout -h guest.example.com
    
  2. Create a configuration file for pmchart to display live data called memory.conf with the following contents:

    #kmchart
    version 1
    
    chart style stacking
            plot color #ffff00 metric mem.util.used
            plot color #ee82ee metric mem.util.free
    chart style stacking
            plot color #ffff00 metric swap.used
            plot color #0000ff metric swap.free
    chart style plot antialiasing off
            plot color #19ff00...
lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime