Red Hat Enterprise Linux Server Cookbook

Monitoring CPU performance

This recipe will show you how to visualize using pmchart and command-line tools to monitor your CPU's performance. We will have a look at the following metrics:

• kernel.all.cpu.wait.total
• kernel.all.cpu.irq.hard
• kernel.all.cpu.irq.soft
• kernel.all.cpu.steal
• kernel.all.cpu.sys
• kernel.all.cpu.user
• kernel.all.cpu.nice
• kernel.all.cpu.idle

How to do it…

This will show you how to create the text and graphical representation of performance data. Perform the following steps:

1. Display live data for the preceding metrics with a 1-second interval for the host, localhost. Execute the following command:

   ~]# pmdumptext -H -t 1 -i -l kernel.all.cpu.wait.total kernel.all.cpu.irq.hard kernel.all.cpu.irq.soft kernel.all.cpu.steal kernel.all.cpu.sys ...