Red Hat Enterprise Linux Server Cookbook

Monitoring storage performance

In this recipe, we'll look at the following metrics:

• disk.all.read
• disk.all.write
• disk.all.read_bytes
• disk.all.write_bytes

How to do it…

Let's create a text and graphical representation of the performance data through the following steps:

1. Display live data for the preceding metrics; you can use the following command for this:

   ~]# pmdumptext -H -t 1 -i -l disk.all.read disk.all.write disk.all.read_bytes disk.all.write_bytes -h guest.example.com
   

   
2. Next, create a configuration file for pmchart to display live data called disk.conf with the following contents:

   #kmchart
   version 1
   
   chart style stacking
    plot color #ffff00 metric mem.util.used ...