Chapter 25. System Performance Monitoring

   

Chapter Syllabus

25.1 Tools Used for Performance Monitoring

25.2 Using GlancePlus

Monitoring system activity provides information to diagnose a problem. Performance of individual system components plays a vital role in overall system response. HP-UX provides many tools that are used to monitor different system activities. Using these tools enables you to find any bottlenecks causing degradation in system performance. A slow system response may not always be due to a slow CPU. It may be caused by a slow disk, less memory installed in the system, a congested network, or some other slow responding system component. To diagnose the actual problem of a slow system, these tools are very helpful.

Some of the tools are bundled with HP-UX, while others may be purchased separately. One of the most important additional tools is GlancePlus/UX, which is a comprehensive monitoring system. It generates reports for a number of system components and activities.

In this chapter, we will start with a list of available tools. We will discuss some of these tools in more detail as we move along in this chapter. Command-line tools will be used to monitor the CPU, disk, virtual memory, and process activity. System Activity Reporter ( sar ) will be used to check a number of parameters. Another tool, top , will be used to list processes that heavily use CPU resources. In the last part of the chapter, we will go through GlancePlus and use it in both text and graphic modes.

The study of these tools is important for effective system administration. When upgrading a slow system, if you are not able to diagnose the actual cause of a slow performance of a system, you may make a wrong decision.


   
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HP Certified
HP Certified: HP-UX System Administration
ISBN: 0130183741
EAN: 2147483647
Year: 2000
Pages: 390
Authors: Rafeeq Rehman

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