NOTE: CentOS Enterprise Linux is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux.
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.
— System Tuning Info for Linux Servers. A
stream-of-consciousness approach to performance tuning and resource
monitoring for servers.
— 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
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.