Chapter 2. Performance Monitoring Tools

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This chapter briefly describes some of the performance monitoring and configuration tools available for Red Hat Enterprise Linux 7. Where possible, this chapter directs readers to further information about how to use the tool, and examples of real life situations that the tool can be used to resolve.
The following knowledge base article provides a more comprehensive list of performance monitoring tools suitable for use with Red Hat Enterprise Linux:

2.1. /proc

The /proc "file system" is a directory that contains a hierarchy of files that represent the current state of the Linux kernel. It allows users and applications to see the kernel's view of the system.
The /proc directory also contains information about system hardware and any currently running processes. Most files in the /proc file system are read-only, but some files (primarily those in /proc/sys) can be manipulated by users and applications to communicate configuration changes to the kernel.
For further information about viewing and editing files in the /proc directory, refer to the Red Hat Enterprise Linux 7 System Administrator's Guide.
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