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This section includes various resources that can be used to learn more about the Red Hat Enterprise Linux-specific subject matter discussed in this chapter.
The following resources are installed in the course of a typical Red Hat Enterprise Linux installation and can help you learn more about the subject matter discussed in this chapter.
vmstat(8) man page — Learn how to display a concise overview of process, memory, swap, I/O, system, and CPU utilization.
iostat(1) man page — Learn how to display CPU and I/O statistics.
sar(1) man page — Learn how to produce system resource utilization reports.
sadc(8) man page — Learn how to collect system utilization data.
sa1(8) man page — Learn about a script that runs sadc periodically.
top(1) man page — Learn how to display CPU utilization and process-level statistics.
http://people.redhat.com/alikins/system_tuning.html — System Tuning Info for Linux Servers. A stream-of-consciousness approach to performance tuning and resource monitoring for servers.
http://www.linuxjournal.com/article.php?sid=2396 — Performance Monitoring Tools for Linux. This Linux Journal page is geared more toward the administrator interested in writing a customized performance graphing solution. Written several years ago, some of the details may no longer apply, but the overall concept and execution are sound.
The following books discuss various issues related to resource monitoring, and are good resources for Red Hat Enterprise Linux system administrators:
The Red Hat Enterprise Linux System Administration Guide; Red Hat, Inc. — Includes a chapter on many of the resource monitoring tools described here.
Linux Performance Tuning and Capacity Planning by Jason R. Fink and Matthew D. Sherer; Sams — Provides more in-depth overviews of the resource monitoring tools presented here, and includes others that might be appropriate for more specific resource monitoring needs.
Linux Administration Handbook by Evi Nemeth, Garth Snyder, and Trent R. Hein; Prentice Hall — Provides a short chapter similar in scope to this book, but includes an interesting section on diagnosing a system that has suddenly slowed down.
Linux System Administration: A User's Guide by Marcel Gagne; Addison Wesley Professional — Contains a small chapter on performance monitoring and tuning.